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Brainstuff Videos by Popular

What is dynamite? How does it work?

12/11/09
Dynamite is a type of chemical explosive. Discover how explosives from gasoline to dynamite work in this episode of BrainStuff. tags: blasting_capbrainstuffchemical_explosivedynamitegasoline_explosivehowstuffworksnitroglycerin

How do cats purr?

12/09/09
Cats tend to purr when they're happy, but pleasure isn't the only reason for this behavior. And they aren't the only animals who purr. Find ... tags: big_cats_purrbrainstuffcatsdo_raccoons_purrhowstuffworkspurrScience_Medicine

What is a rice krispy?

12/07/09
Like many cereals, rice krispies are made by puffing grains -- in this case, rice. Find out how rice crispies and other puffed cereals are ... tags: brainstuffcerealhowstuffworkspuffed_cerealspuffingrice_crispiesrice_krispy

Why do batteries die but then come back to life?

12/04/09
Batteries, particularly car batteries, seem to go dead and then come back to life after a resting period. How does this self-recharging ... tags: backbatteriesbrainstuffcomediehowstuffworkslife

How do artificial flavors work?

12/02/09
Artificial flavors imitate natural flavors and are found in many processed products. Learn more about the chemistry of flavors, both ... tags: artificial_flavorsbrainstuffestershowstuffworksnatural_flavorsScience_Medicinesmell

Is there any way to see satellites that are in orbit?

11/30/09
There are hundreds of satellites orbiting the Earth, but it's not always easy to see them. Get Marshall's tips on how to spot satellites in ... tags: asynchronous_orbitbrainstuffgeosynchronous_orbithowstuffworkssatelliteScience_Medicinesee

Why can't we breathe underwater?

11/27/09
Water is made up of hydrogen and oxygen, so why aren't we able to breathe underwater Find out in this episode of BrainStuff. tags: brainstuffbreathecan'tH20howstuffworkshydrogenoxygen

What is leather and where does it come from?

11/25/09
Most leather is made from processed cattle skin, although synthetic and other varieties exist. Learn more about leather in this episode of ... tags: brainstuffchromiumcow_skinhowstuffworksleatherrawhideScience_Medicine

How do satellites orbit the earth?

11/23/09
In this episode of BrainStuff, Marshall explains the physics behind satellites and orbits. tags: brainstuffcurvatureearthfree_fallhowstuffworksorbitsatellites_orbit_earth

How can you measure the height of a tall tower?

11/20/09
In this episode of BrainStuff, Marshall reveals three common techniques for measuring the height of tall objects like towers. tags: brainstuffbroomstickheight_of_towerhowhowstuffworksmeasureobjects

How does a magneto work?

11/16/09
A magneto is a kind of electrical generator used in small gasoline engines in lieu of a battery. Find out how magnetos work in this episode ... tags: armaturebrainstuffelectrical_generatorelectromagnetgeneratorhowstuffworksignition

Why do tools have "drop forged" stamped on them?

11/13/09
Tools that say 'drop forged' have been created using a technique called drop forging. Find out how drop forging and several other kinds of ... tags: brainstuffcold_forgingdiesdrop_forgingforgehowstuffworkspress_forging