28-June-2019 Friday
How does the nitrogen capsule work?
21-April-2017 Friday
Why is the faucet sucking water?
27-February-2017 Monday
The secret of the horses of the Anichkov bridge
22-January-2017 Sunday
Every child's dream
06-January-2017 Friday
Why is it cold in St. Petersburg at -2 like it's -15 outside the window?
04-September-2016 Sunday
What happens if you pull the stopcock?
31-July-2016 Sunday
4 inventors of the ballpoint pen
21-July-2016 Thursday
How to make money selling ice?
14-July-2016 Thursday
The principle of operation of a mechanical watch.
11-July-2016 Monday
The invention of the wristwatch.
04-July-2016 Monday
Invention of the beer opener
27-June-2016 Monday
The invention of the Gillette razor (video)
26-June-2016 Sunday
TOP 5 Unusual bottle openers in the form of accessories. (video in comments)
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