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German engineers developed radars during WW2.

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This was used by both the allies and axis powers.

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Radars were used to detect incoming air crafts.

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It is said that radars were a huge part in WW2, and lead the Allies to victory.

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Coffee gave troops in WW2 a boost in energy, which was much needed.

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One pound every 5 weeks produced less than one cup a day.

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Coffee was known to be as important as bread and beef. It was also known to restore courage and strength, and kept up the morale.

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Coffee was known to be best transported in envelopes, each holding about a quarter ounce.

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1942 US Army Field Ration C B Unit MRE Taste Test Vintage Meal Ready to Eat Oldest Food Review

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With creating radars, accidentally, the microwave was made.

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The first microwave was 6 feet tall, and weighed about 750 lbs.

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Scientists and engineers wanted to make a smaller radar, that could detect smaller objects than lower frequency, longer wave-length radars.

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After an accident, engineers and scientist started to experiment with the microwave, making it be used for practical use, and not for wars.

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Microwave Oscillators - Explains the magnetron and klystron