RT @Rainmaker1973: Why doesn’t the white balloon pop? Simple concept but really effective science demo by Steve Spangler. The white balloon… 0 atbildes
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Ernests Štāls - mastodon.social/@ernests (2019-07-07 20:01:25) |
RT @Rainmaker1973: Why doesn’t the white balloon pop? Simple concept but really effective science demo by Steve Spangler. The white balloon… | |