In 1945 Percy Lebaron Spencer, an American engineer and inventor, was
busy working on manufacturing magnetrons, the devices used to produce
the microwave radio signals that were integral to early radar use. Radar
was an incredibly important innovation during the time of war, but
microwave cooking was a purely accidental discovery.
While standing by
a functioning magnetron, Spencer noticed that the chocolate bar in his
pocket had melted. His keen mind soon figured out that it was the
microwaves that had caused it, and later experimented with popcorn
kernels and eventually, an egg, which (as we all could have told him
from mischievous childhood ‘experiments’), exploded.
The first microwave oven weighed about 750lbs and was about the size of a fridge!
www.needapplianceparts.com/microwave.aspx
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