Friday, January 13, 2012
Wednesday, January 11, 2012
Tuesday, January 10, 2012
How Escalators Work
Check out "How Escalators Work" from HowStuffWorks.com.
http://science.howstuffworks.com/transport/engines-equipment/escalator.htm
How do they get the balls in ball bearings so perfectly round and smooth?
Check out "How do they get the balls in ball bearings so perfectly round and smooth?" from HowStuffWorks.com.
http://science.howstuffworks.com/transport/engines-equipment/question513.htm
How Gear Ratios Work
Check out "How Gear Ratios Work" from HowStuffWorks.com.
http://science.howstuffworks.com/transport/engines-equipment/gear-ratio.htm
Friday, January 6, 2012
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