1. Microwave Oven
"American Engineer Percy Spencer invented the microwave oven after a chocolate bar melted in his pocket as he stood next to a radar tube."
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| The very first microwave oven |
Not always necessity is the cause of inventions sometimes the accidental incidents can also be the invention's cause.
2. The Longest Experiment
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| Funnel has been slowly dripping the tar since past 85 years |
"In 1930 , a University of Queensland professor began an experiment with a funnel full of pitch(tar) to show his students how something that appears a solid can be a liquid. The first drip took ten years to fall and the eighth drip fell in 2000. It will be hundred years before all the pitch has dripped through, finishing the long,long experiment."
3. The Bifocals
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| Benjamin Franklin |
"American scientist Benjamin Franklin had bad eyesight and got so fed up of switching between different pairs of spectacles that he invented bifocals."
The prominent line in middle of the glass clearly differentiates between the two different visions which made Benjamin Franklin to abandon the use of the different pair of spectacles.
