National Microwave Oven Day – The BluePrint

Days were there when man was not even aware of fire and its use! Then gradually his knowledge developed and he began to make his food with fire!

Millions die as most Indians still cook with wood and dung - India Climate  Dialogue

Cooking with LPG stove can be seen everywhere these days. With the sky rocketing LPG prices, probably Microwave Oven may prove cheaper!!!!

Petition · The Govt asks us to give up LPG cylinder subsidy,why cant they  give up LPG Gas Stove Taxes ·

Gradually, the art of cooking through fire developed ovens of several shapes and sizes! and we had charcoal oven, ovens with firewood, electrical and today even homes of ordinary folks have MICROW WAVE OVANS! A sure sign of development and improved knowledge!


On December 6th, National Microwave Oven Day honors one appliance that changed how we use the kitchen. 

Quite by accident, self-taught American engineer Percy Spencer discovered a way to heat food safely with microwaves. While working with an active radar in 1945, he noticed a melting chocolate bar in his pocket. The high-powered microwave beams created a heating effect ideal for cooking. Spencer deliberately attempted cooking popcorn with the microwaves. Next, he tried cooking an egg. Both the popcorn and the egg created dramatic results. However, the popcorn resulted in success, unlike the egg. The egg exploded in his fellow engineer’s face! However, we can cook eggs in microwave ovens.  

Spencer, employed by Raytheon, continued experimenting with different methods of heating food safely with microwaves.

  • Raytheon filed a United States patent application for Spencer’s microwave cooking process on October 8th, 1945.
  • In 1947, Raytheon built the first commercially available microwave oven. It was called the “Radarange.”
  • An estimated 90% of homes in the United States have a microwave in them.

HOW TO OBSERVE #MicrowaveOvenDay

The microwave oven cooks more than popcorn! We can use this celebration to explore the many uses of the microwave oven. A few suggestions to get started, but also encourage all to share their favorites, too!

  • make crispy bacon (and we won’t get burned either)
  • melt chocolate for all that holiday dipping
  • heat rice, flax, or bean-filled hot pads for achy muscles
  • steam vegetables
  • soften brown sugar
  • dry herbs
  • loosen labels from jars

While testing these ideas out, let us take some time to clean our microwave. First, steam a wet cloth for a minute on high and let it stand for another minute. The steam softens any build-up. Then, wipe our microwave down with a little hot soapy water to remove any greasy splatter. 


National Day Calendar® continues researching the origins of this technological holiday. 

Staff Picks

Q. What cannot be put into a microwave?
A. The microwave is a convenient kitchen tool to have around, but it has its limitations. Something that should never be put in a microwave includes:

  • Metal, including foil
  • Single-use plastics
  • China
  • Some ceramics

Q. When was Percy Spencer inducted into the National Inventors Hall of Fame?
A. The National Inventors Hall of Fame inducted Percy Spencer in 1999.

Q. Can I cook a whole egg in the shell in the microwave?
A. No. The egg will explode much like Percy Spencer’s did in 1945. However, eggs can be scrambled and poached in the microwave.

Q. Did Percy Spencer patent the microwave technology?
A. Yes. On January 24, 1950, Raytheon Manufacturing Co. received patent no. US2495429A  for “Method of treating foodstuffs.” The patent names Percy L. Spencer as the inventor.

It is observed on 6 December to celebrate and honor the invention that has made the lives easier by making it convenient and faster for them to cook and reheat food.

Did You Know Today Is National Microwave Oven Day?


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