An RF mixer is a device that multiplies two signals together, producing new signals at both the sum and difference of their frequencies. This simple idea is the foundation of superheterodyne radios, which have been the dominant radio design for over a century. The radio receives an incoming signal, mixes it with a second internally-generated frequency, and the result is a new, easier-to-handle frequency called the Intermediate Frequency (IF), which the rest of the radio then processes. In practice, mixers are often built using diodes, but the core concept is straightforward: multiply two signals, get new frequencies out.
📻🎚📡

[Read more 1]

[Read more 2]

Contributed by:
Dotty Scout.

@GoogleFactss
#RFMixer #Electronics
#MemberContribution

Contact us with feedback & ideas:
@Googlefactss_Feedback_bot

Tiny Irukandji jellyfish are about 1 cm across and almost transparent.
They live mainly in northern Australian waters but have also been reported in other tropical seas. The sting may feel mild at first or go unnoticed. Within 5–120 minutes, symptoms gradually appear and intensify, including severe headache, back and muscle pain, chest and abdominal pain, nausea, vomiting, sweating, anxiety, a feeling of impending doom, fast heart rate, and high blood pressure. In severe cases, pulmonary edema may occur. Symptoms usually improve in 4–30 hours but may take up to two weeks to fully resolve.
🪼😵😩🤕

[Read more 1]
[Read more 2]

@GoogleFactss
#IrukandjiSyndrome #JellyfishSting #OceanSafety #MarineHealth

Contact us with feedback & ideas:
@Googlefactss_Feedback_bot

Sally Ride (May 26, 1951 – July 23, 2012) became the first American woman and second woman from Earth in space on June 18, 1983.🚀 aboard Space Shuttle Challenger on mission STS-7.
She was a 32 year old physicist selected by NASA in 1978; she flew again in 1984 on STS-41G and spent over 343 hours in orbit.
🚀🛰🌙💫

[Read more]

@googlefactss
#Space #NASA #History #WomenInSpace #AstronautFacts

Feedback & ideas:
@Googlefactss_Feedback_bot

The platypus is a monotreme native to eastern Australia and Tasmania. It lays eggs but has a unique mix of features: a duck-like bill, webbed feet, a beaver-like tail, and dense waterproof fur. Platypuses are excellent swimmers and use electroreception in their bills to detect prey underwater. They’re one of the few venomous mammals—the males have venomous spurs on their hind legs.
🦆🦫🥚🍼🇦🇺

[Read more]

@googlefactss
#Platypus #Monotreme #UniqueAnimals #AustralianWildlife

Feedback & ideas:
@Googlefactss_Feedback_bot

“Blue blood” means someone from a noble or royal family. The term comes from Spanish “sangre azul” in the 13th century. It described pale-skinned Spanish nobles whose veins looked blue. Today, it still refers to aristocratic or elite families.
🩵🌟🏰

[Read more]

@GoogleFactss
#BlueBlood #History #Nobility #Aristocracy #LanguageFacts

The Battle of Waterloo was fought on 18 June 1815 near Waterloo, in present-day Belgium. Napoleon’s French army was defeated by Coalition forces led by the Duke of Wellington and Prussian Field Marshal Blücher.
Waterloo was Napoleon’s last battle.
⚔️🇫🇷🇬🇧🇵🇷📜🇧🇪

[Read more 1]
[Read more 2]

@GoogleFactss
#BattleOfWaterloo #Napoleon #History #Belgium #MilitaryHistory

Rhydon was the first Pokémon ever designed. Its design was inspired by dinosaurs, with horns, a long tail, and a big body. Even though it was created first, Rhydon is #112 in the Pokédex.
🦏🦖

[Read more 1]
[Read more 2]
[Read more 3]

@GoogleFactss
#Pokemon #Rhydon #GamingFacts #Pokedex
#FunFact #Anime #4AllAges

Pablo Escobar surrendered to Colombian authorities after Colombia approved a ban on extraditing its citizens on June 19, 1991. He turned himself in with the help of a priest who acted as an intermediary. He was taken to a specially prepared prison near Medellín. The surrender followed a government policy offering reduced sentences and protection from extradition for traffickers who surrendered and confessed to crimes.
🚔🇨🇴🏛️⛪

[Read more 1]
[Read more 2]

@GoogleFactss
#PabloEscobar #Colombia #History #DrugTrafficking #Medellín

In Mauritania, slavery still exists even though it is illegal. Many people are born into slavery and cannot leave. They work without pay and face harsh treatment. Activists and groups are trying to stop slavery and rescue those who are already trapped or even born as slaves. As far as known, only one slave "owner" has been sentenced, to 6 months in jail.

[Read more 1]
[Read more 2]
[Read more 3]

[How to help end slavery]

@googlefactss
#Mauritania #Slavery #HumanRights #Freedom #Islam #Law #StopTheTraffik

Axolotls can regenerate entire limbs, parts of their heart, and even parts of their brain. They stay in their larval form their whole lives, keeping their feathery external gills that fan water to breathe, which gives them a permanently “smiling” and cute appearance. They are usually pink, white, or gray, and have tiny, lidless eyes that make them look like little underwater aliens. Axolotls are gentle, slow-moving, and mostly eat small fish, worms, and insects.

Less fun part: Their extreme regenerative abilities make them a favorite for scientific research.

Fun part:
Their unusual appearance makes them one of the most beloved amphibians in the world.

Feel free to post Axolotl memes, pictures etc in the comments!
🦎

[Read more 1]
[Read more 2]

@googlefactss
#Animals #Nature #WeirdFacts #Wildlife #DidYouKnow #Science #CuteAnimals #DeadPoolAmphibian

Contact us with feedback & ideas:
@Googlefactss_Feedback_bot

AI data centers use millions of liters of water each day to stay cool. Servers get very hot while running complex computations. Many centers use water-based cooling like evaporative or liquid cooling. Water is also used to make electricity and computer chips. In some areas, this can put serious pressure on local water supplies.
💧🖥️🔥🌍

[Read more 1]
[Read more 2]

@GoogleFactss
#AI #DataCenters #WaterUsage #TechFacts #Environment #SaveWaterThinkForYourselves
#StopTheClankers

Anthony Smith, a 4-year-old boy with hearing loss, didn’t want to wear his hearing aid. Marvel Comics made a new superhero called "The Blue Ear" based on him. This helped Anthony feel proud to wear his device. The superhero is a young kid who can grow up with famous heroes like Hawkeye and The Avengers.

[Source]

@googlefactss 🦸‍♂️👂 #HearingAid #Superhero #Marvel #Inspiration

Eggshells add calcium carbonate to soil, helping fast-growing plants like tomatoes and peppers grow strong and reducing soil acidity. To use, dry and grind eggshells into powder, then sprinkle around plants.

🥚🌿🐌

[Read more]

@googlefactss
#Gardening #Eggshells #Calcium #PlantCare #PestControl

Opossums do not consciously play dead. They enter a behavior called thanatosis when threatened. It is an involuntary response to extreme stress. During thanatosis, opossums become limp, slow their breathing, and remain motionless. Their eyes may stay open, and they can release a foul smell. This state can last from a few minutes to several hours. Opossums cannot end thanatosis at will. It is triggered automatically by fear or danger from predators. Scientists describe it as a defensive survival behavior. It is not fainting although it looks a bit similar.
😵🙀

@GoogleFactss
#Opossum #WildlifeFacts #AnimalBehavior #Nature #Survival

Many lipsticks and cosmetics use “pearl essence,” a shiny ingredient made from fish scales. The shine comes from guanine crystals found in herring scales. Synthetic versions exist, but natural pearl essence is still commonly used in cosmetics.
🐟💄✨

[Read more]

@GoogleFactss
#Lipstick #Cosmetics #ScienceFacts #BeautyFacts #FishScales
#RedHerring