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James Hope from Gloucester asks

I recently read a book on the big bang, and it said that protons and neutrons are made up of 3...

Gillian from Haliburton asks

I'd like to know what happens to radio waves once they have been emitted. Do they live forever?...

Charcoal from the Internet asks

What makes classifying dogs in breeds different from classifying humans in races? I thought that...

Wilma de leon from Philippines asks

What is the reaction between a chitin--the polysaccharide intermediate between protein and...

David Howard from UK asks

Can you tell me whether it would be possible to launch a spacecraft into orbit using a giant...

Dave from Sutton asks

Are there foods to eat which lower/reduce harmful cholesterol levels, or is this achieved by...

Edward Driedger asks

How do touch lamps work? If one person touches the touch pad and someone else taps his other hand,...

S.Leeberman asks

How do I estimate the mass of an object when I know its volume and nothing more? For example, how...

Charles Tramble asks

What can I use to block magnetic lines of force? I have been working on an rf transmitter project...

Gary Kolling asks

What Satellite Galaxy is moving fastest toward the Galactic center? What Satellite Galaxy is moving...

Daniel Eyre asks

How far is Pluto from the sun, and will we ever be able to travel to other planets, besides the...

David Magill from Shippensburg asks

In 1828, Friedrich Wohler, a German chemist attempted to make an inorganic salt, ammonium cyanate,...

Angela from Portland asks

This question is in regard to ‘vintage Lucite purses’ that sometimes end up having an odor...

Vasu from London,ON asks

Is it possible for a singularity to form outside a black hole?

TJ from Thunder Bay asks

Last spring and summer there were millions of army worms creeping all over everything. Maybe worse...

aparna from Petaluma asks

Why is blood salty?

Sara asks

What happens to a compass when it is held exactly on magnetic north? Does it just spin?

Adil asks

Has absolute zero (0 K) ever been reached a laboratory?

Andrew from Friendly asks

Who was the first scientist to study light?

Rehan Ahmed from Rahim yar Khan, Pakistan asks

What is vacuum ? How is it created because if we remove the air then the instrument in which we...

Bertrand Xiao asks

Is there a better alternative that has yet to be discovered other than zinc to be used in a battery?

Alvina Chung from Sydney asks

The first four facts below suggest that the earth should be getting heavier and heavier - but it...

David Woodard from Lansing, MI asks

How do "Fire Retardents" retard fire? If the flash point of any given material never changes? I...

Pierce H. asks

Does mercury in its gas form act the same way as air - I mean if heated, does it rise?

Amanda Gillis from Margaree asks

What are the intermolecular forces for polycrystalline solids? And what is the geometric shape? I'm...

Robert Steinhaus from Castro Valley asks

Can a fast breeder reactor like the famous Candu series of Canadian designed fast reactors be...

Furqan from Lahore asks

Why don't ordinary Silicon diodes emit light like LED's?

Francis from Ottawa asks

When a ball is rotated at the end of a string in a horizontal circle (parallel to the ground) what...

Ian from London asks

How can I tell the difference between Zinc and Aluminium metal?

Josh from New York asks

If hydrogen peroxide is bad for cells, why is it good for cuts? Also, how is it a good treatment...

James from Hamilton asks

How do we explain the difference between cells that can repair damaged tissue, such as skin cells,...

Ed from Port Orchard, Washington, USA asks

Do magnets become less massive over time? It requires energy to hold a magnet on the refigerator...

Bruce MacKinnon, CET from Kitchener, Ont asks

Is polyol used in the reaction of isocyantes (methylene diioscyante) the same compound as Glycerol?

erin asks

Can you explain how those bright sticks work, the ones that glow for hours with a snap and a shake?

David Keirsey asks

What are the quantum numbers that are involved in the distinction between matter and antimatter? I...

Julie from London asks

Can you give me some information on the reaction of ascorbic acid and N-Bromosuccinimide? How do...

Kelvin from Markham asks

Why does the Original Coke sink into the water, when Diet Coke floats in the water?

Vanessa from Calgary asks

What is the history of solar ponds and what trends are expected for solar ponds in the future?

Duane from the Internet asks

If two magnets are in contact with each other or close proximity to each other either repulsing or...

Alexis Rolling from Nampa, Alberta,Canada asks

Why was Mars formed?