A guest speaker came to our class and showed us all these kool demonstrations, with his equipment. All of them were about vacuums and how they don't suck they create a low pressure system. he was a great speaker, and his experiments such as, the feather and the washer dropping at the same time, were really kool. i got a kool souvener too it was a crushed can. kinda funny. I really enjoyed his demonstrations and it was the highlight of my chemisrty year. PEACE!!
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