Recent Comments by wraith 
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You Need to Know About This Caterpillar
wraith says...Great Video!
The Mystery at the Bottom of Physics
wraith says...Why does he think that Otters are useless?
Indigo- Keeping Vaccines Cool Without Electricity
wraith says...You're dead on. This was orignally used for self-cooling beer kegs and was developed by Peter Maier-Laxhuber at the Technical University München, Germany (where else? ;-) ) in 1983.
From German Wikipedia:
https://de.wikipedia.org/wiki/Selbstkühlendes_Bierfass
Brlliant idea to use the technology this way!
I kinda want one of these...for beer.
Authentic Medieval Sword Techniques
wraith says...This is, in fact, rather common. If you take a look at fencing manuals (Talhofer and the like). Please remember that the blade was not razor-sharp because it was supposed to work against mail and plate.
I don't know much about HEMA, but why would you have a guard that requires you to hold the blade?
I can understand it on a single-edged blade but on a double-edged sword?
How China is changing Hollywood
wraith says..."(..)In 'The Martian' the Chinese Space Industry saves the day.(...)"
Yep, same as they do in the (first self published) book. Your argument being?
How to open a can without a can opener
wraith says...Aha. That is the guy who has sanded off all the curbstones in our neighbourhood. Gotcha.
1. Great idea (if you don't mind the fine metal dust in your food).
2. He says he opens his lunch that way?
3. His eats canned stuff for lunch?