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48 views

Greeks' gas lamps

I once heard that there is a source that says the Greeks invented gas lamps or some sort of street lights which enabled the Jews to roam the streets at night and not be with their families. The plan ...
9
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1answer
102 views

What is the source of Yartzeit tablet?

Who invented the Yahrtzeit tablet (panel)? At first glance, this could not have been common before 150 years ago, as there is no room to place candles where the electric lights go. Who invented ...