Aluminum base shell with ceramic insulator, 4 short pins, top contact, T-shaped envelope. Stamped on envelope: "371B". Donor’s card reads: “Half-wave rectifier made by National Union for the US ...
Plastic 4-pin base, top contact, S-shaped envelope. Donor’s card reads: “Half-wave mercury vapor rectifier made by Westinghouse for the US government during World War II. This tube is the Westinghouse ...
A simple compound with a complicated history, dibenzalacetone became one of science’s clever defenses against ultraviolet light. Its story shows how chemistry shapes daily life Cops make new Dezi ...
Sixty years ago, a monstrous hepatitis experiment was performed on mentally disabled children at Willowbrook State School that raises serious ethical questions about vaccine challenge trials for Covid ...
This story discusses suicide. If you or someone you know is having thoughts of suicide, please contact the Suicide & Crisis Lifeline at 988 or 1-800-273-TALK (8255). EXCLUSIVE: A top conservative ...
As Doug Ford vows to ban using dogs for scientific research, many of Canada's top universities say they have moved away from the practice You can save this article by registering for free here. Or ...
When you buy through links on our articles, Future and its syndication partners may earn a commission. The three founding members of Talking Heads, David Byrne, bassist Tina Weymouth and drummer Chris ...
Physicists have found a way to redistribute uncertainty in quantum measurements, paving the way for ultra-sensitive ...
Albert Einstein’s theory of relativity is famous for predicting some really weird but true phenomena, like astronauts aging slower than people on Earth and solid objects changing their shapes at high ...
BEIJING: Chinese AI developer DeepSeek has released its "experimental" latest model, which it said was more efficient to train and better at processing long sequences of text than previous iterations ...
Portland, Oregon, is on track to face a Trump crime crackdown reckoning that's more than five years in the making. Portland was ravaged by violence in 2020 as liberal protesters, Black Lives Matter ...
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