1947The first microwave oven was taller than a person.

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Raytheon’s 1947 Radarange stood about 1.8 m tall and weighed around 340 kg.

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<span class="aj-year">1928</span>Penicillin was discovered because a lab dish was left uncovered.<span class="aj-year">1980</span>Post-it Notes began with a glue that was “too weak”.<span class="aj-year">1873</span>Jeans were patented in 1873.