thegrimsleeper IS

Member Profile

Real Name: Helgi
Channel: Pets
Birthdate: June 2nd, 1988 (28 years old)
A little about me...
I do like weird

Member Since: January 3, 2008
Favorite Sift: Stephen Fry on the joys of swearing
Last Power Points used: September 25, 2011
Available: now
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Comments to thegrimsleeper

siftbot says...

Your video, Coming out, has made it into the Top 15 New Videos listing. Congratulations on your achievement. For your contribution you have been awarded 1 Power Point.

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Your video, Long egg production, has made it into the Top 15 New Videos listing. Congratulations on your achievement. For your contribution you have been awarded 1 Power Point.

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Your video, Look-See, has made it into the Top 15 New Videos listing. Congratulations on your achievement. For your contribution you have been awarded 1 Power Point.

oritteropo says...

Thanks

There's actually a bit more to the chemistry of smelting than he mentions. It's not only the higher temperatures that are important, carbon monoxide is used to extract the base metal from the ore (which is usually an oxide).

If he's been relying on ancient sources, they may well have not mentioned the chemistry since oxidation and reduction were only really properly described in the 18th century (oxygen was discovered in 1772) and not all historians have a good grounding in chemistry.

thegrimsleeper said:

This is a great video and one of my favorite things about it is that his video description answers the very question I had immediately after watching it. I had never really wondered why people use charcoal instead of just the wood it's made from.
*promote

siftbot says...

Congratulations! Your dedication to finding diamonds in the rough and pushing videos of other members to success has earned you your "Assister" Level 1 Badge!

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