Sun's Influence On Earth
19 Feb 2008 The Sun's influences on the Earth are numerous. The sun radiates light, which combined with the rotation of the Earth on..- 403
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general-articles
What Determines The Direction Of River Flow
19 Feb 2008 Quite a few factors affect the direction a river takes. First of all, water runs downhill due to gravity. It may flow no..- 376
speeches
How A Transformer Works
19 Feb 2008 A transformer is an electrical device used to convert AC power at a certain voltage level to AC power at a different vol..- 228
speeches
How The Pendulum Works
19 Feb 2008 Have you ever looked inside a grandfather clock or a small mechanical alarm clock, seen all the gears and springs and th..- 206
speeches
Why Toothpaste Repels Water
19 Feb 2008Water has too much surface tension to make bubbles last...they contract on themselves and pop, and the water evapora..
- 222
speeches
Ignition Coil
19 Feb 2008In order to generate as high a voltage as possible at the secondary it is necessary to produce as high a voltage as p..
- 209
general-articles
The Dragon Fly
18 Feb 2008 The characteristics of six legs and a body divided into three parts became numerically the most successful group of anim..- 438
general-articles
The Sticky Tongues Of Lizards
18 Feb 2008 They are all carnivorous, and indeed some are quite formidable such as the horned toads (Family Leptodactylidae) whi..- 409
general-articles
The Thrust Of An Airplane
18 Feb 2008 Thrust is the force which moves an aircraft through the air. Thrust is used to overcome the drag of an airplane, and t..- 373
general-articles
Why A Chameleons Changes Its Color
18 Feb 2008 Actually, the chameleon is constantly changing its color. Chameleons possess in chromatophores (cells that give skin’s c..- 409
business-sense
How To Boost Company Productivity Through Incentives
18 Feb 2008 Many companies today are realizing that they need a better way to retain, reward, and motivate their employees. The age-..- 182
speeches
Experiment To Test Why Big Ships Don't Sink
18 Feb 2008 All you need is: * aluminum foil, * a few paper clips, * an empty aquarium (or similar large container)..- 211
