https://padlet.com/qvanhoesen1_1/j9hrqqpakqb9gpd3 made with lots of reserch en-us 2020-12-16 15:36:39 UTC 2020-12-16 18:49:44 UTC hello@padlet.com qvanhoesen1_1 https://padlet.com/qvanhoesen1_1/j9hrqqpakqb9gpd3/wish/1024416886 1st century AD, they talked about magnifying glasses]]> 2020-12-16 15:45:30 UTC https://padlet.com/qvanhoesen1_1/j9hrqqpakqb9gpd3/wish/1024416886 qvanhoesen1_1 https://padlet.com/qvanhoesen1_1/j9hrqqpakqb9gpd3/wish/1024430569 17th century, formulated the principles of lenses and focusing ]]> 2020-12-16 15:48:22 UTC https://padlet.com/qvanhoesen1_1/j9hrqqpakqb9gpd3/wish/1024430569 qvanhoesen1_1 https://padlet.com/qvanhoesen1_1/j9hrqqpakqb9gpd3/wish/1024457053 1665, built the first British compound microscope. it had two converging lenses called the objective and the eye piece. this is what lead to discovering cells.]]> 2020-12-16 15:53:52 UTC https://padlet.com/qvanhoesen1_1/j9hrqqpakqb9gpd3/wish/1024457053 qvanhoesen1_1 https://padlet.com/qvanhoesen1_1/j9hrqqpakqb9gpd3/wish/1024603505 around 1670, he grinded very small, thin pieces of glass lenses into not more than a millimeter. it could magnify by more than 700x. they were mounted in a bras plate and could magnify using light.]]> 2020-12-16 16:23:55 UTC https://padlet.com/qvanhoesen1_1/j9hrqqpakqb9gpd3/wish/1024603505 qvanhoesen1_1 https://padlet.com/qvanhoesen1_1/j9hrqqpakqb9gpd3/wish/1024641682 in 1931, they invented the electron microscope. instead of light, this microscope focused on the image of an electron. it can see an object nearly the size of an atom. but all living organisms are killed due to radiation.]]> 2020-12-16 16:31:43 UTC https://padlet.com/qvanhoesen1_1/j9hrqqpakqb9gpd3/wish/1024641682