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While there, he developed many useful low-cost teaching/science teaching aids using locally available materials. The possibilities of using ordinary things for doing science and recycling modern junk into joyous products appealed immensely to children. Arvind Gupta's first book, Matchstick Models and other Science Experiments, was translated ...
Hershey–Chase experiment (by Alfred Hershey and Martha Chase) uses bacteriophage to prove that DNA is the hereditary material (1952). Meselson–Stahl experiment proves that DNA replication is semiconservative (1958). Crick, Brenner et al. experiment using frameshift mutations to support the triplet nature of the genetic code (1961).
Pictet's experiment: Marc-Auguste Pictet: Demonstration Thermal radiation: 1797 Cavendish experiment: Henry Cavendish: Measurement Gravitational constant: 1799 Voltaic pile: Alessandro Volta: Demonstration First electric battery: 1803 Young's interference experiment: Thomas Young: Confirmation Wave theory of light: 1819 Arago spot experiment ...
Chemistry sets may have been the first American toys marketed toward parents with the goal of "improving" children for success in later life. [10] Gilbert Lab Technician Set for Girls, 1958, at the Science History Institute Johnny Horizon Environmental Test Kit, 1971, at the Science History Institute
Other projects like AgeGuess [8] focus on the senior demographics and enable the elderly to upload photos of themselves so the public can guess different ages. Lists of citizen science projects may change. For example, the Old Weather project website indicates that as of January 10, 2015, 51% of the logs were completed. [9]
When you think of a vending machine, things like snacks, sodas or even pharmaceutical supplies could come to mind. But you might be surprised to know that the first ever vending machine actually ...
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