Who was the first scientist to study light?
I'd like to know what happens to radio waves once they have been emitted. Do they live forever?...
from the Internet
What makes classifying dogs in breeds different from classifying humans in races?
I thought that...
Russell J. Wells Jr.
from Dearborn Hts., Mich.
Why is the efficiency of most all lasers limited to .1% to 30%? What are the limiting factors? What...
Is there really a tree in Tasmania called the Huon Pine that is 20,000 years old?
Is there a better alternative that has yet to be discovered other than zinc to be used in a battery?
According to my family, a comet streaked through the sky the morning one of my uncles was born. His...
Why is blood salty?
Wilma de leon
What is the reaction between a chitin--the polysaccharide intermediate between protein and...
In 1828, Friedrich Wohler, a German chemist attempted to make an inorganic salt, ammonium cyanate,...
Where on earth is the gas neon found? Is it common? Rare? In what form is it usually found (as a...
from Rahim yar Khan, Pakistan
What is vacuum ? How is it created because if we remove the air then the instrument in which we...
What happens to a compass when it is held exactly on magnetic north? Does it just spin?
If the earth stopped revolving would humans weigh less or more? Would there still be gravity on...
What Satellite Galaxy is moving fastest toward the Galactic center? What Satellite Galaxy is moving...
from Lansing, MI
How do "Fire Retardents" retard fire? If the flash point of any given material never changes? I...
What are the intermolecular forces for polycrystalline solids? And what is the geometric shape? I'm...
from New York
If hydrogen peroxide is bad for cells, why is it good for cuts? Also, how is it a good treatment...
When a ball is rotated at the end of a string in a horizontal circle (parallel to the ground) what...
How far is Pluto from the sun, and will we ever be able to travel to other planets, besides the...
How can I tell the difference between Zinc and Aluminium metal?
How do touch lamps work? If one person touches the touch pad and someone else taps his other hand,...
How do we explain the difference between cells that can repair damaged tissue, such as skin cells,...
The first four facts below suggest that the earth should be getting heavier and heavier - but it...
What can I use to block magnetic lines of force? I have been working on an rf transmitter project...
This question is in regard to ‘vintage Lucite purses’ that sometimes end up having an odor...
from Thunder Bay
Last spring and summer there were millions of army worms creeping all over everything. Maybe worse...
Can you give me some information on the reaction of ascorbic acid and N-Bromosuccinimide? How do...
What is the difference between animal hibernation and a human coma? These states appear similar,...
Can you explain how those bright sticks work, the ones that glow for hours with a snap and a shake?
Why don't ordinary Silicon diodes emit light like LED's?
from niagara falls
What is the ingredient used to make "hair gel" stiff and hold?
Bruce MacKinnon, CET
from Kitchener, Ont
Is polyol used in the reaction of isocyantes (methylene diioscyante) the same compound as Glycerol?
Does mercury in its gas form act the same way as air - I mean if heated, does it rise?
from Victoria, BC, Canada
My wife asked me, "What does the sun burn and why doesn't it burn out?" I told her about helium...
I'm doing a science project and my topic is about the speed of sound. I was wondering if you...
from Castro Valley
Can a fast breeder reactor like the famous Candu series of Canadian designed fast reactors be...
from Port Orchard, Washington, USA
Do magnets become less massive over time? It requires energy to hold a magnet on the refigerator...
I have made a theoretical discovery in my studies. It concerns vibrations of frame of reference in...
What makes the aluminum powder in an Etch-A-Sketch stick to the glass to make an image?
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