DID YOU KNÖW ?? ►A humming bird flaps its wings up to 90 - TopicsExpress



          

DID YOU KNÖW ?? ►A humming bird flaps its wings up to 90 times in one second or over 5000 times a minute. ►An individual blood cell takes about 60 seconds to make a complete circuit of the body. ►Around 2,200 left-handed people die annually due to improper use of equipment designed only for right handed people. ►The microwave oven was invented by mistake when an engineer testing a magnetron tube noticed that the radiation from it melted the chocolate bar he had in his pocket. ►The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day. ►Harvard Universitys original name was Cambridge. It only changed when John Harvard donated 400 books to the school..
Posted on: Mon, 17 Mar 2014 12:04:13 +0000

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