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Originally Posted by FrustratedReader
Which was WWII UK propaganda to attempt to hide that they actually had Radar on the aircraft!
Eventually the Germans duplicated the magnetrons (now the source in ALL microwave ovens as well as most Radar) even though the unit had explosive charge to destroy it when the aircraft would be shot down.
They are a simple to make device the Victorians could have made. The modern ones in a microwave are simpler. I have one out of an oven and I used to have a 1948 model. See Wikipedia.
It's true you'd be ill without any of the vitamins in carrots. BTW, carrots used to be almost white.
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I had an elderly good English friend, long deceased now, who worked on the development of the high powered cm band magnetrons in the UK during the second world war. I have been involved in radio all my life and provided management services to or project managed a number of big military and civil radar projects in several countries.
And this going blind stuff can get people uptight and imaginations fired up when radars are involved. One secondary radar site was on a hill hill up above nearest houses a mile or so away below and they had a reputation of putting environmental claims in the way of any developments in the area. They got all uptight so I had the task of talking to them about it pointing out how secondary radar works, its very low power, etc. Fortunately one of the residents was an old retired physics professor from the local university and he came up to me afterwards to thank me for coming and went on to say that he had worked in the UK in radar during WW2 and they used to set dry grass on fire in front of the antennas (so would have been the early long wavelength ones, I assume).
I got one of the many surprises of my life decades ago during my first working visits to the USA to see signs on company cafeterias doors warning that there were operating microwave ovens inside - no wonder USA residents are all wearing glasses as I assume they still go inside their work cafeterias despite the frightening warning signs on the doors
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