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About duba

Geologist (its more than enough)
Member Since May 28, 2006
70, Male, Israel

Answers


A:

How to seperate gold from sand

Searching for Gold Gold is a rare metal. It is inside rocks or mixed with river sand. People wash river sand to find gold. People dig for gold under the ground. Lumps of gold are called nuggets ...
Submitted by duba 4 months ago
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A:

I live in the north and here there are large ...

I am sorry, but your information is not enough to identify the stones. You must send a picture. Try entering the web-site : www.geology-israel.co.il It will help if you send ,at least, the exact ...
Submitted by duba 5 months ago
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A:

Question about the solar wind

The speed of the Solar wind = 300 - 700 km/sec The Density = 1.5 - 7 protons/cm3 TODAY= speed = 365.4 km/sec Density = 3.9 protons/cm3
Submitted by duba 5 months ago
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A:

Does the sun revolve?

Yes - it revolve !! At the equator the solar rotation period is 24.47 days. This is called the sideral rotation period, and should not be confused with the synodic rotation period of 26.24 days ...
Submitted by duba 6 months ago
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A:

Advantages

Clear, unlimited energy, and you don't depend on another country.
Submitted by duba 7 months ago
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A:

What are "Seneca Guns"?

Seneca Guns The term “Seneca guns” is just a name, not an explanation. It does not tell us anything about what causes these noises and shakings. The name originated in a short story that James ...
Submitted by duba 8 months ago
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A:

Any particular essay on how to make the world a ...

If a world catasrophe will occure, (like an all-civilazation-mass-extinction by an astroid) than the world will be a better place (even a wonderful world).
Submitted by duba 8 months ago
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A:

Trip to Italy after earthquake

Hi On the contrary - after an earthquke the pressure in the earth crust is in low level, so - go there with a peace of mind.
Submitted by duba 8 months ago
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