Chocolate that Makes Noise / Mr. Denjiro's Happy Energy! #671
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The Mechanism of Audio Feedback / Mr. Denjiro's Happy Energy! #476
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Aspirator / Mr. Denjiro's Happy Energy! #624
7:46
原盤は日本製、高音質なレコードを作るプロの技 | WIRED Japan
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1 vs 1000 guitar picks (5000 picks/second)
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A Sweet Lemon?! / Mr. Denjiro's Happy Energy! #629
16:23
400MPH Pool Break with a Cannon at 80,000FPS - The Slow Mo Guys
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This Ancient Technology Makes Things Spin Really Fast!
9:48