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https://stufftoteachourkids.org/2017/05/22/egg-experiment-vacuum-%d7%91%d7%99%d7%a6%d7%94-%d7%9c%d7%9c%d7%90-%d7%9e%d7%95%d7%a6%d7%94/
The egg experiment with a bottle vacuum - ביצה ללא מוצה