Alex Smith from Owen Sound asks

How can I make a simple flashlight?

Max from Toronto asks

How many water and wastewater treatment plants in Canada are using chlorine gas for disinfection?

Ken from Vancouver asks

If one could increase the flow of air into a jet engine,would this increase the efficiency of the...

Kevin asks

How can I make a plastic object? I want to make a clear or translucent, thin cylinder that is...

Phil from Ottawa asks

Are there some materials that shrink faster that other materials in cold? If yes, which ones?

Guy from Vancouver asks

Why did Canada pull out of the ITER fusion project, and what, if any, research is Canada...

Rick Morrison from Sudbury On asks

What makes certain surfaces such as highway lane markings, reflective strips on clothing and...

Shauna from the Internet asks

How long can a vehicle typically run without oil or antifreeze before the engine seizes?

Linda O\'Neill from Dartmouth asks

How can you define the pressure of 5 g. on a person? This would be done with the fingers. I am...

Mike Starry from Fresno, CA asks

How and when will hydrogen fuel cells be used to provide electricity for my home? What would it...

D. Tolenaar asks

How does air conditioning work?

Kelvin C from Markham, Ontario, Canada, North America asks

I was wondering, what solids or liquids can trap heat in very well, or at least maintain the...

Sophie from Winnipeg asks

Why do street lights shut down, often, when we drive underneath them? Oftentimes, my boyfriend and...

Yogesh Patil asks

Can you provide a detailed structure and working of the magnetron tube used in microwave ovens?

Tony Young from Santiago, Dominican Republic asks

I have a problem with moisture in my apartment. I live in a Caribbean country and am not able to...

Mike Delie from Menomonie asks

I'm doing a senior project on recycling, and I'm curious if it uses more energy to mine and convert...

Marcos Chimenti from Rio de Janeiro asks

Does air act as an insulator against lightning on flying airplanes? I know the aluminum case is...

collin from fort walton beach, fl asks

I just recently did an experiment using paper airplanes with different wing types (swept back at...

DeeCee from Indianapolis asks

How does vacuum insulation work and can an R Value be assigned to it? Does the depth of the vacuum...

mark irvine from sacramento asks

If you have a square 1 pound block with a front flat surface strike a ball, would it be the same as...

Brandten B Miller from the Internet asks

How does the shape of the fuselage affect the glide distance of an aircraft? What is the best...

Joaquin Cornejo from Los Angeles asks

Why do dry cell batteries (rechargeable) need to be fully drained before they can be recharged?

Furqan from Lahore asks

Do bends in a wire affect its electrical resistance ?

Rod from canterbury asks

Is there any magnetic shielding material which is not itself attracted by a magnet?

Robert Steinhaus from Castro Valley asks

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

Morten Aasbak from Bergen, Norway asks

I came across a "water powered clock", and it can supposedly generate power from water alone. My...

Aliahs Ahmadzai from Maple Ridge, BC asks

When you get a lighter and get a piece of metal and you turn on the lighter and put it over the...

Jordan Duncan from Prince George, BC Canada asks

I need to know what happens to wood (softwoods, hardwoods and kiln dried woods) when they are...

Yamna from Dubai, United Arab Emirates asks

1.) Do the intesity of the sun's rays increase the current in a solar cell? 2.) Does increased...

Jayde from Surrey asks

What is the field of cryogenics? What kind of occupation is available in cryogenics?

Fester from Tacoma asks

I'm doing a science project and my topic is about the speed of sound. I was wondering if you...

David Howard from UK asks

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

RR from Toronto asks

How do electric kettles work?

Vanessa from Calgary asks

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

Daniel Wong from Singapore asks

How do miners mine for Uranium?

Matt from Mississauga asks

I have been reading and learned that electrons flow from negative to positive in the external...

Ali from Pakistan asks

In microwave transmission sometimes we use power in positive e.g +13db and sometimes in negative...

dave hack from brisbane asks

Nitrous oxide when used in motorsport is often classed as "forced induction" although is...

Roman Tanisis from Coquitlam, BC asks

Hi was always wondering if it is ok to use a higher voltage power supply for a lower voltage...

Ethan Heil from Salem, VA asks

I was reading about the tensile strength of certain fabrics, and was wondering what kind of...