How progressive lenses were invented ?
The first patent for a design of progressive addition lenses (PAL) was obtained by Owen Aves in England in 1907. However, because of the limitations in manufacturing in those times, he was never able to produce and commercialize such lenses.
In the first half of the 20th century some other designs for progressive lens were patented but never successfully commercialized.
๐ โ๏ธThe first progressive with a modern design was patented by Bernard Maitenaz โฌ๏ธ of France, in 1953.
The progressive lens has been evolving since then, with the help of manufacturers to improve usability and distortion-free viewing.
โน๏ธ Progressive lenses are a giant leap in lens technology since they allow the wearer the ability to see distance, intermediate, and near fields all in one set of eyewear. This is especially helpful for viewing digital devices since they reside in the intermediate range, which distance and bifocal eyeglasses cannot reach โฌ๏ธ.
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The first patent for a design of progressive addition lenses (PAL) was obtained by Owen Aves in England in 1907. However, because of the limitations in manufacturing in those times, he was never able to produce and commercialize such lenses.
In the first half of the 20th century some other designs for progressive lens were patented but never successfully commercialized.
๐ โ๏ธThe first progressive with a modern design was patented by Bernard Maitenaz โฌ๏ธ of France, in 1953.
The progressive lens has been evolving since then, with the help of manufacturers to improve usability and distortion-free viewing.
โน๏ธ Progressive lenses are a giant leap in lens technology since they allow the wearer the ability to see distance, intermediate, and near fields all in one set of eyewear. This is especially helpful for viewing digital devices since they reside in the intermediate range, which distance and bifocal eyeglasses cannot reach โฌ๏ธ.
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โค12๐9
What is a brief history of sunglasses?
๐ The first sunglasses were invented sometime in 12th century China. They were a crude slab of smoked quartz that was made to block out the light from the sun. The frames were roughly shaped frame to hold them against the user's face.
๐ Around 1430 vision-correcting eyeglasses were darkened and they were introduced into Italy via the Chinese.
๐ In the 18th century, an English optician James Ayscough began experimenting with tinted lenses in spectacles but not to protect from the sun but to improve vision for those with poor or failing eye sight. He believed that by changing the color of the lenses to a blue/green tint, he could correct specific vision impairments.
๐ The modern-type sunglasses appeared in the 20th century. In 1929, a US businessman Sam Foster, put sunglasses into mass production in America.
๐ Since 1970s well-known fashion designers and movie stars escalated the sunglass craze with their brand-name lines.
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๐ The first sunglasses were invented sometime in 12th century China. They were a crude slab of smoked quartz that was made to block out the light from the sun. The frames were roughly shaped frame to hold them against the user's face.
๐ Around 1430 vision-correcting eyeglasses were darkened and they were introduced into Italy via the Chinese.
๐ In the 18th century, an English optician James Ayscough began experimenting with tinted lenses in spectacles but not to protect from the sun but to improve vision for those with poor or failing eye sight. He believed that by changing the color of the lenses to a blue/green tint, he could correct specific vision impairments.
๐ The modern-type sunglasses appeared in the 20th century. In 1929, a US businessman Sam Foster, put sunglasses into mass production in America.
๐ Since 1970s well-known fashion designers and movie stars escalated the sunglass craze with their brand-name lines.
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โค16๐11
What is a lens and its types?
โน๏ธ A lens is a piece of transparent material that is shaped to bend light rays in a specific way as they pass through it, whether that means causing the rays to converge to or diverge from a specific point.
The word โlensโ derives from the Latin word โlentil,โ owing to the shape similarities between a converging lens and a legume.
The 2๏ธโฃ types of lenses are:
๐concave lenses with following features
๐The light is spread out by a diverging lens.
๐Thinner in the centre than at the edges.
๐The image is on one side of the lens, while the object is on the other.
๐The focal length is positive.
๐The image will be erect, virtual, and diminished.
and
๐convex lenses with following features
๐The refracted rays are converged by a converging lens.
๐Thicker in the centre than at the edges.
๐The object and the image are both on the same side of the lens.
๐The focal length is negative.
๐The resultant image will be both real and inverted.
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โน๏ธ A lens is a piece of transparent material that is shaped to bend light rays in a specific way as they pass through it, whether that means causing the rays to converge to or diverge from a specific point.
The word โlensโ derives from the Latin word โlentil,โ owing to the shape similarities between a converging lens and a legume.
The 2๏ธโฃ types of lenses are:
๐concave lenses with following features
๐The light is spread out by a diverging lens.
๐Thinner in the centre than at the edges.
๐The image is on one side of the lens, while the object is on the other.
๐The focal length is positive.
๐The image will be erect, virtual, and diminished.
and
๐convex lenses with following features
๐The refracted rays are converged by a converging lens.
๐Thicker in the centre than at the edges.
๐The object and the image are both on the same side of the lens.
๐The focal length is negative.
๐The resultant image will be both real and inverted.
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๐12๐ฅ2๐1๐1
Ask Me
What is a lens and its types? โน๏ธ A lens is a piece of transparent material that is shaped to bend light rays in a specific way as they pass through it, whether that means causing the rays to converge to or diverge from a specific point. The word โlensโ derivesโฆ
How do we use lenses?
Concave Lens is used:
โ๏ธ to correct myopia eye defects
โ๏ธ to make spectacles
โ๏ธ in peepholes in hotel room doors.
โ๏ธ in the construction of certain types of telescopes.
Convex Lens is used:
โ๏ธ to correct hypermetropia eye defects
โ๏ธ in cameras and digital cameras as optical devices for producing a reduced, true, and inverted image on film.
โ๏ธ in microscopes and telescopes
โ๏ธ to produce a magnified image of an object.
Subtypes of convex lens are:
๐ A bi-convex lens is a basic lens that consists of two convex surfaces in a spherical form with the same radius of curvature.
๐ Plano-convex lenses are positive focal length elements that have one spherical surface and one flat surface
๐ ConConvex lenses are also known as converging lenses since the rays converge after falling on the convex lens.
Subtypes of concave lenses are:
๐ A bi-concave lens have two inward curved surfaces. These lenses have a negative focal length.
๐ A plano-concave lens is an optical lens with one concave surface and one flat surface. It has a negative focal length and can be used for light projection, beam expansion, or to increase the focal length of an optical system.
๐ A concavo-convex lens is a converging lens. This is because it is thicker in the middle and thinner at the edges allowing it to converge all the light that is incident on it.
โน๏ธโผ๏ธ๐ The lens of our eyes is also convex. The inverted image of the item on the retina is formed by the eye lens.
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Concave Lens is used:
โ๏ธ to correct myopia eye defects
โ๏ธ to make spectacles
โ๏ธ in peepholes in hotel room doors.
โ๏ธ in the construction of certain types of telescopes.
Convex Lens is used:
โ๏ธ to correct hypermetropia eye defects
โ๏ธ in cameras and digital cameras as optical devices for producing a reduced, true, and inverted image on film.
โ๏ธ in microscopes and telescopes
โ๏ธ to produce a magnified image of an object.
Subtypes of convex lens are:
๐ A bi-convex lens is a basic lens that consists of two convex surfaces in a spherical form with the same radius of curvature.
๐ Plano-convex lenses are positive focal length elements that have one spherical surface and one flat surface
๐ ConConvex lenses are also known as converging lenses since the rays converge after falling on the convex lens.
Subtypes of concave lenses are:
๐ A bi-concave lens have two inward curved surfaces. These lenses have a negative focal length.
๐ A plano-concave lens is an optical lens with one concave surface and one flat surface. It has a negative focal length and can be used for light projection, beam expansion, or to increase the focal length of an optical system.
๐ A concavo-convex lens is a converging lens. This is because it is thicker in the middle and thinner at the edges allowing it to converge all the light that is incident on it.
โน๏ธโผ๏ธ๐ The lens of our eyes is also convex. The inverted image of the item on the retina is formed by the eye lens.
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What is a lens and its types?
โน๏ธ A lens is a piece of transparent material that is shaped to bend light rays in a specific way as they pass through it, whether that means causing the rays to converge to or diverge from a specific point.
The word โlensโโฆ
โน๏ธ A lens is a piece of transparent material that is shaped to bend light rays in a specific way as they pass through it, whether that means causing the rays to converge to or diverge from a specific point.
The word โlensโโฆ
๐21โค6๐3
What is a skyscraper?
๐ Currently, a skyscraper refers to a tall habitable building with iron or steel frameworks over 100 m.
๐ The first modern skyscraper was created in 1885โthe 10-story Home Insurance Building in Chicago โฌ๏ธ.
๐ Before the word skyscraper described enormous buildings, it was used to describe anything that โstood outโ, was tall - a tall man, a high-standing horse, a sky-sail, etc.
๐ Pointed out by skyscraper researchers, the Italian word โgrattacieloโ means scraping the sky. It was in use since the early 13th century, and described a tall man.
๐ The word scraper dates back to the Old Norse word โskrapaโ, which means to erase. Today, it means to use a tool to apply pressure to something. A skyscraper essentially erases the sky by sticking out and blocking it.
๐ Sources for the first usage of the word skyscraper are unclear. One of the oldest confirmed references in print was in American newspapers in the late 19th.
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๐ Currently, a skyscraper refers to a tall habitable building with iron or steel frameworks over 100 m.
๐ The first modern skyscraper was created in 1885โthe 10-story Home Insurance Building in Chicago โฌ๏ธ.
๐ Before the word skyscraper described enormous buildings, it was used to describe anything that โstood outโ, was tall - a tall man, a high-standing horse, a sky-sail, etc.
๐ Pointed out by skyscraper researchers, the Italian word โgrattacieloโ means scraping the sky. It was in use since the early 13th century, and described a tall man.
๐ The word scraper dates back to the Old Norse word โskrapaโ, which means to erase. Today, it means to use a tool to apply pressure to something. A skyscraper essentially erases the sky by sticking out and blocking it.
๐ Sources for the first usage of the word skyscraper are unclear. One of the oldest confirmed references in print was in American newspapers in the late 19th.
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๐31๐6โค2๐1
What is Bessemer Process and how it enabled the construction of skyscrapers?
โ๏ธBessemer process is a process of making steel from pig iron by burning out impurities (as carbon) by means of a blast of air forced through the hot liquid metal.
โ๏ธIt was the first inexpensive industrial process that allowed for the mass production of steel.
โ๏ธThis term bears its name from Henry Bessemer (1813-1898), an English inventor and engineer, devoted to metallurgy โฌ๏ธ.
โ๏ธThough named after Bessemer, before it was commercialized, this process evolved from the contributions of many investigators, eg an American, William Kelly, who had also been working on a similar process for making steel.
๐In any case, this breakthrough opened the door for builders to start making taller and taller structures.
โน๏ธModern steel is still made using technology based on Bessemer process.
โน๏ธTaller buildings were also made possible through the invention of the electric elevator and lighting.
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โ๏ธBessemer process is a process of making steel from pig iron by burning out impurities (as carbon) by means of a blast of air forced through the hot liquid metal.
โ๏ธIt was the first inexpensive industrial process that allowed for the mass production of steel.
โ๏ธThis term bears its name from Henry Bessemer (1813-1898), an English inventor and engineer, devoted to metallurgy โฌ๏ธ.
โ๏ธThough named after Bessemer, before it was commercialized, this process evolved from the contributions of many investigators, eg an American, William Kelly, who had also been working on a similar process for making steel.
๐In any case, this breakthrough opened the door for builders to start making taller and taller structures.
โน๏ธModern steel is still made using technology based on Bessemer process.
โน๏ธTaller buildings were also made possible through the invention of the electric elevator and lighting.
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๐25โค4๐ฅ2๐1๐1
Who is known as the inventor of skyscrapers?
While โthe Bessemer processโ kept Bessemerโs name well-known, lesser-known today is the man who employed that process to create the first skyscraper and is often considered as the inventor of modern skyscrapers and construction.
Itโs George A. Fuller (1851-1900)โฌ๏ธ, an American architect.
Throughout the 19th century, construction techniques had called for outside walls to carry the load of a buildingโs weight.
Fuller, however, had a different idea. He realized that buildings could bear more weightโand therefore soar higherโif he used Bessemer steel beams to give buildings a load-bearing skeleton on the inside of the building.
In 1889, Fuller erected the Tacoma Buildingโฌ๏ธ, a successor to the Home Insurance Building that became the first structure ever built where the outside walls did not carry the weight of the building.
Fuller developed a technique for creating steel cages that would be used in subsequent skyscrapers.
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While โthe Bessemer processโ kept Bessemerโs name well-known, lesser-known today is the man who employed that process to create the first skyscraper and is often considered as the inventor of modern skyscrapers and construction.
Itโs George A. Fuller (1851-1900)โฌ๏ธ, an American architect.
Throughout the 19th century, construction techniques had called for outside walls to carry the load of a buildingโs weight.
Fuller, however, had a different idea. He realized that buildings could bear more weightโand therefore soar higherโif he used Bessemer steel beams to give buildings a load-bearing skeleton on the inside of the building.
In 1889, Fuller erected the Tacoma Buildingโฌ๏ธ, a successor to the Home Insurance Building that became the first structure ever built where the outside walls did not carry the weight of the building.
Fuller developed a technique for creating steel cages that would be used in subsequent skyscrapers.
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๐21โค7๐ฅฐ1
What is the tallest building in the world?
๐๐ฅ๐ฆ๐ช At an incredible height of 828 meters (2,717 feet), Burj Khalifa in Dubai, the United Arab Emirates, is the tallest recorded building in the world.
๐Itโs three times as tall as the Eiffel Tower.
๐It has hotels, residential apartments and shopping malls that cover 2km2. Upon its completion in 2010, it broke several records, including the world's highest restaurant and nightclub. It also has the most number of floors (163) of any building ever constructed and the tallest elevator shaft in the world.
๐It also has over 24,000 windows.
๐The structure is built using reinforced concrete, aluminium and steel. It took more than 110,000 tons of concrete, 55,000 tons of steel rebar, and 22 million man-hours to complete the building. The total weight of aluminum used on the Burj Khalifa is equivalent to that of five A380 aircraft.
๐The tip of the spire of the Burj Khalifa can be seen from up to 95 kilometers away.
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๐๐ฅ๐ฆ๐ช At an incredible height of 828 meters (2,717 feet), Burj Khalifa in Dubai, the United Arab Emirates, is the tallest recorded building in the world.
๐Itโs three times as tall as the Eiffel Tower.
๐It has hotels, residential apartments and shopping malls that cover 2km2. Upon its completion in 2010, it broke several records, including the world's highest restaurant and nightclub. It also has the most number of floors (163) of any building ever constructed and the tallest elevator shaft in the world.
๐It also has over 24,000 windows.
๐The structure is built using reinforced concrete, aluminium and steel. It took more than 110,000 tons of concrete, 55,000 tons of steel rebar, and 22 million man-hours to complete the building. The total weight of aluminum used on the Burj Khalifa is equivalent to that of five A380 aircraft.
๐The tip of the spire of the Burj Khalifa can be seen from up to 95 kilometers away.
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๐39โค11๐คฏ5๐ฅ2
What buildings are also in the worldโs top-3 of the tallest constructs?
๐๐ฅ๐ฒ๐พ The almost-completed Merdeka 118 โฌ๏ธ is the second tallest building in the world, and the tallest building in South East Asia.
It towers 679 meters (2,220 feet) into the sky, overlooking the city of Kuala Lumpur in Malaysia.
The name Merdeka means Independence Day in Malaysian, while it will have 118 floors in total and is set to officially open in 2023.
๐๐ฅ๐จ๐ณ Set in Shanghai, China, Shanghai Tower โฌ๏ธ is now the third tallest building in the world, measuring 632 meters (2,073 feet).
Completed in 2015, the impressive structure took nearly 20 years to complete after several funding issues arose during its construction.
The tower has one of the worldโs fastest elevators, which travels at 20.5 meters per second, whizzing visitors up to the top of the buildingโs incredible 128 floors.
While Burj Khalifa is the tallest construct in the world, Shanghai Tower has the biggest number of usable floors.
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๐๐ฅ๐ฒ๐พ The almost-completed Merdeka 118 โฌ๏ธ is the second tallest building in the world, and the tallest building in South East Asia.
It towers 679 meters (2,220 feet) into the sky, overlooking the city of Kuala Lumpur in Malaysia.
The name Merdeka means Independence Day in Malaysian, while it will have 118 floors in total and is set to officially open in 2023.
๐๐ฅ๐จ๐ณ Set in Shanghai, China, Shanghai Tower โฌ๏ธ is now the third tallest building in the world, measuring 632 meters (2,073 feet).
Completed in 2015, the impressive structure took nearly 20 years to complete after several funding issues arose during its construction.
The tower has one of the worldโs fastest elevators, which travels at 20.5 meters per second, whizzing visitors up to the top of the buildingโs incredible 128 floors.
While Burj Khalifa is the tallest construct in the world, Shanghai Tower has the biggest number of usable floors.
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๐25โค12๐ฅ1
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How do different heights of waves and tsunamis look like in comparison?
๐ Some time ago, a group of computer graphic designers asked themselves this question and made this video.
๐ It shows waves and tsunamis of different sizes in comparison to a small boat and some of the tallest buildings like the Eiffel Tower and the Burj Khalifa.
๐ A multitude of waves from the smallest wave of 1 meter high to one of the tallest wave ever surfed and the biggest tsunami that was recorded in July 1958 in Lituya Bay, on Alaska's southern coast, is shown in the video.
โน๏ธ๐ In the comments to this video a user rightly remarks that the form of normal waves and tsunami waves is different. Tsunami waves are usually not particularly high (unless in situations like Lituya Bay), it's the wavelength that is much more dangerous. Tsunami waves might only be 5m high but they continuously push inland, totally inundating the area. A normal wave, even if itโs very high, crashes and is dispersed in seconds.
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๐ Some time ago, a group of computer graphic designers asked themselves this question and made this video.
๐ It shows waves and tsunamis of different sizes in comparison to a small boat and some of the tallest buildings like the Eiffel Tower and the Burj Khalifa.
๐ A multitude of waves from the smallest wave of 1 meter high to one of the tallest wave ever surfed and the biggest tsunami that was recorded in July 1958 in Lituya Bay, on Alaska's southern coast, is shown in the video.
โน๏ธ๐ In the comments to this video a user rightly remarks that the form of normal waves and tsunami waves is different. Tsunami waves are usually not particularly high (unless in situations like Lituya Bay), it's the wavelength that is much more dangerous. Tsunami waves might only be 5m high but they continuously push inland, totally inundating the area. A normal wave, even if itโs very high, crashes and is dispersed in seconds.
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๐คฏ21๐16โค3๐3๐ฑ1
What is the difference between holiday and vacation?
Both holidays and vacations are enjoyable ways to spend time with family and friends, and many people use the terms interchangeably, but there is a difference between the two.
๐ A holiday is a day set aside for a special celebration or commemoration. The word holiday has its roots in the Old English word 'hฤligdรฆg', which means โholy day.โ In many cultures, holidays are associated with religious or spiritual traditions. However, there are also secular holidays that are celebrated by people of all beliefs. Holidays often involve special food, decorations, and activities.
๐ Vacation is a travel planning application that helps you organize your trip itinerary. Itineraries can include flights, hotels, car rentals, and activities. Vacation also includes a packing list to help you remember what to bring on your trip.
So, holidays are typically tied to specific dates, whereas vacations can be taken at any time.
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Both holidays and vacations are enjoyable ways to spend time with family and friends, and many people use the terms interchangeably, but there is a difference between the two.
๐ A holiday is a day set aside for a special celebration or commemoration. The word holiday has its roots in the Old English word 'hฤligdรฆg', which means โholy day.โ In many cultures, holidays are associated with religious or spiritual traditions. However, there are also secular holidays that are celebrated by people of all beliefs. Holidays often involve special food, decorations, and activities.
๐ Vacation is a travel planning application that helps you organize your trip itinerary. Itineraries can include flights, hotels, car rentals, and activities. Vacation also includes a packing list to help you remember what to bring on your trip.
So, holidays are typically tied to specific dates, whereas vacations can be taken at any time.
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๐33โค10๐6
What are some interesting facts about the history of vacations?
๐๐บ The Greeks were the first who saw the need to have rest periods to perform more work and intellectually.
๐๐But it is the Romans who invented the vacations as a social phenomenon. Many Roman families went on vacation through well-kept roads of the Roman Empire, the preferred destination being the Mediterranean coast.
โ๐ In the European Middle Ages, leisure was considered sinful, so the vacations were not practiced even on Sunday.
๐๐ฐ It wasnโt until the 19th century that vacations ceased to be a privilege of the upper classes. The industrial revolution gave the middle class access to travel at reasonable prices thanks to the railroad.
๐๐ฏThe Communist Government of the Soviet Union in 1917 was the first that spoke of vacations as a right of workers.
๐โ ๐ซ๐ท๐ง๐ท In 1930s France legalized paid vacations, and in the 1960s, along with Brazil, it became the country with the most paid vacations in the world.
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๐๐บ The Greeks were the first who saw the need to have rest periods to perform more work and intellectually.
๐๐But it is the Romans who invented the vacations as a social phenomenon. Many Roman families went on vacation through well-kept roads of the Roman Empire, the preferred destination being the Mediterranean coast.
โ๐ In the European Middle Ages, leisure was considered sinful, so the vacations were not practiced even on Sunday.
๐๐ฐ It wasnโt until the 19th century that vacations ceased to be a privilege of the upper classes. The industrial revolution gave the middle class access to travel at reasonable prices thanks to the railroad.
๐๐ฏThe Communist Government of the Soviet Union in 1917 was the first that spoke of vacations as a right of workers.
๐โ ๐ซ๐ท๐ง๐ท In 1930s France legalized paid vacations, and in the 1960s, along with Brazil, it became the country with the most paid vacations in the world.
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๐25๐17โค4๐ฉ4๐1
Which countries are the โbestโ and the โworstโ for paid vacation days?
A team of analysts reviewed data on the annual statutory paid leave and paid public holidays laws in 197 countries, referring to government websites and UN structures. The countries were then ranked based on all collected information.
Vacation days refers in this study to the combined total of paid leave days and paid public holidays.
๐๐ฎ๐ท Iran has the most statutory annual paid vacation days (PVD) in the world โ 53. As well as a reasonable 26 days of paid leave, Iran has nearly a month of public holidays (27 days), which is more than any other country. Religious holidays and days to mark events concerning the Islamic Revolution contribute to this total.
๐ฅ๐ธ๐ฒ San Marino placed the second (46 PVD), African and Middle Eastern countries dominate the top of the table โฌ๏ธ.
๐๐ซ๐ฒ๐บ๐ธWith 9 PVD Micronesia is the โworstโ and with 10 PVD the U.S. is the second โworstโ country for paid vacation days.
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A team of analysts reviewed data on the annual statutory paid leave and paid public holidays laws in 197 countries, referring to government websites and UN structures. The countries were then ranked based on all collected information.
Vacation days refers in this study to the combined total of paid leave days and paid public holidays.
๐๐ฎ๐ท Iran has the most statutory annual paid vacation days (PVD) in the world โ 53. As well as a reasonable 26 days of paid leave, Iran has nearly a month of public holidays (27 days), which is more than any other country. Religious holidays and days to mark events concerning the Islamic Revolution contribute to this total.
๐ฅ๐ธ๐ฒ San Marino placed the second (46 PVD), African and Middle Eastern countries dominate the top of the table โฌ๏ธ.
๐๐ซ๐ฒ๐บ๐ธWith 9 PVD Micronesia is the โworstโ and with 10 PVD the U.S. is the second โworstโ country for paid vacation days.
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๐24โค4๐ค2
Which countries get the most and the least paid leave days?
In the same study, paid leave refers to the statutory minimum annual time off bookable by the individual.
The study makes a conclusion that four weeks' leave has become something of a norm around much of the world. The average by country is 18.2 days of paid leave per year.
๐2๏ธโฃ2๏ธโฃ countries have a 3๏ธโฃ0๏ธโฃ-day leave plan, of which 1๏ธโฃ0๏ธโฃ are in Africa ๐.
These are:
๐ฒ๐จMonaco
๐ฒ๐ญMarshall Islands
๐ฆ๐ฉAndorra
๐ฒ๐ปMaldives
๐ง๐นBhutan
๐ฐ๐ฒComoros
๐ฉ๐ฏDjibouti
๐ฌ๐ถEquatorial Guinea
๐ง๐ญBahrain
๐ฐ๐ผKuwait
๐ฉ๐ฟAlgeria
๐ฌ๐ณGuinea
๐ฑ๐พLibya
๐ฒ๐ฑMali
๐ฒ๐ฌMadagascar
๐ณ๐ชNiger
๐น๐ฌTogo
๐ด๐ฒOman
๐ต๐ชPeru
๐ต๐ฆ Panama
๐น๐ฒTurkmenistan
๐พ๐ชYemen
๐ฅ๐ฅ๐ฒ๐ฉ๐ด๓ ง๓ ข๓ ณ๓ ฃ๓ ด๓ ฟ๐ท๐บ Moldova, Scotland and Russia have 2๏ธโฃ8๏ธโฃ paid leave days.
๐๐ฐ๐ฎ๐ซ๐ฒ๐ณ๐ท๐บ๐ธ The Pacific island countries of Kiribati, Micronesia and Nauru, and The U.S. are at the bottom of the table for paid leave, with the figure of 0๏ธโฃ days.
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In the same study, paid leave refers to the statutory minimum annual time off bookable by the individual.
The study makes a conclusion that four weeks' leave has become something of a norm around much of the world. The average by country is 18.2 days of paid leave per year.
๐2๏ธโฃ2๏ธโฃ countries have a 3๏ธโฃ0๏ธโฃ-day leave plan, of which 1๏ธโฃ0๏ธโฃ are in Africa ๐.
These are:
๐ฒ๐จMonaco
๐ฒ๐ญMarshall Islands
๐ฆ๐ฉAndorra
๐ฒ๐ปMaldives
๐ง๐นBhutan
๐ฐ๐ฒComoros
๐ฉ๐ฏDjibouti
๐ฌ๐ถEquatorial Guinea
๐ง๐ญBahrain
๐ฐ๐ผKuwait
๐ฉ๐ฟAlgeria
๐ฌ๐ณGuinea
๐ฑ๐พLibya
๐ฒ๐ฑMali
๐ฒ๐ฌMadagascar
๐ณ๐ชNiger
๐น๐ฌTogo
๐ด๐ฒOman
๐ต๐ชPeru
๐ต๐ฆ Panama
๐น๐ฒTurkmenistan
๐พ๐ชYemen
๐ฅ๐ฅ๐ฒ๐ฉ๐ด๓ ง๓ ข๓ ณ๓ ฃ๓ ด๓ ฟ๐ท๐บ Moldova, Scotland and Russia have 2๏ธโฃ8๏ธโฃ paid leave days.
๐๐ฐ๐ฎ๐ซ๐ฒ๐ณ๐ท๐บ๐ธ The Pacific island countries of Kiribati, Micronesia and Nauru, and The U.S. are at the bottom of the table for paid leave, with the figure of 0๏ธโฃ days.
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Which countries have the most and the least paid public holidays?
According to the study, Asian countries are at the top of the table for paid public holidays (PPH).
๐๐ฎ๐ท Workers in Iran get to enjoy more paid public holidays than those working in any other country. Their many public holidays are in honor of both national and religious events with a grand total of 2๏ธโฃ7๏ธโฃ days which are recognized as PPH.
๐ฅ๐ง๐ฉBangladesh workers receive a similarly generous amount of 2๏ธโฃ4๏ธโฃ PPH that also include Islamic religious holidays.
At the top 1๏ธโฃ0๏ธโฃ countries with most paid public holidays one also finds:
๐ฆ๐ฟAzerbaijan (21 PPH)
๐ฐ๐ญCambodia (21 PPH)
๐ธ๐ฒSan Marino (whose 20 public holidays make it the most generous in Europe)
๐ฒ๐ฒMyanmar (20 PPH)
๐ฌ๐พ (19 PPH)
๐ฐ๐ฟKazakhstan (19 PPH)
๐ฎ๐ถIraq (18 PPH)
๐จ๐ดColombia (18 PPH)
๐๐ฑ๐พ๐ฑ๐งAt the bottom of the table for paid public holidays are Libya with 0 PPH and Lebanon with 2 PPH.
The average number of PPH is 11.8.
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According to the study, Asian countries are at the top of the table for paid public holidays (PPH).
๐๐ฎ๐ท Workers in Iran get to enjoy more paid public holidays than those working in any other country. Their many public holidays are in honor of both national and religious events with a grand total of 2๏ธโฃ7๏ธโฃ days which are recognized as PPH.
๐ฅ๐ง๐ฉBangladesh workers receive a similarly generous amount of 2๏ธโฃ4๏ธโฃ PPH that also include Islamic religious holidays.
At the top 1๏ธโฃ0๏ธโฃ countries with most paid public holidays one also finds:
๐ฆ๐ฟAzerbaijan (21 PPH)
๐ฐ๐ญCambodia (21 PPH)
๐ธ๐ฒSan Marino (whose 20 public holidays make it the most generous in Europe)
๐ฒ๐ฒMyanmar (20 PPH)
๐ฌ๐พ (19 PPH)
๐ฐ๐ฟKazakhstan (19 PPH)
๐ฎ๐ถIraq (18 PPH)
๐จ๐ดColombia (18 PPH)
๐๐ฑ๐พ๐ฑ๐งAt the bottom of the table for paid public holidays are Libya with 0 PPH and Lebanon with 2 PPH.
The average number of PPH is 11.8.
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What does most life on Earth depend on?
Most life on our planet depends on the process called photosynthesis.
This process is carried out by plants, algae, and some types of bacteria, which capture energy from sunlight to produce oxygen (O2) and chemical energy stored in glucose (a sugar). Herbivores then obtain this energy by eating plants, and carnivores obtain it by eating herbivores.
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.
Look at this video โฌ๏ธ how the oxygen is released by a leaf during photosynthesis.
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Most life on our planet depends on the process called photosynthesis.
This process is carried out by plants, algae, and some types of bacteria, which capture energy from sunlight to produce oxygen (O2) and chemical energy stored in glucose (a sugar). Herbivores then obtain this energy by eating plants, and carnivores obtain it by eating herbivores.
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.
Look at this video โฌ๏ธ how the oxygen is released by a leaf during photosynthesis.
Subscribe- t.me/askmenow
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