The candle warms the air inside the glass, causing higher pressure. After the candle goes out (due to the oxygen being used) the air begins to cool. This cooling air creates lower pressure, creating a ...
Add some science to your Valentine's Day by using a few ingredients from around the house. STEP 2: Attach the accessory hose to the storage canister and the food sealer. STEP 3: Start the vacuum food ...
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