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Robert Hooke was involved as the first scientist to discover the cells. Robert Hooke (1635-1703) is an English physicist. He contributed to the discovery of cells while looking at a thin slice of cork. He then thought that cells only exist in plants and fungi. In 1665, he published Micrographia. For an additional information, another scientist, Antonie van Leeuwenhoek (1673) contributed to ...
What was Robert Hooke's contribution to the cell theory? ... The cells Hooke saw in the cork were dead ...
Robert Hooke saw that there tiny boxlike holes in the cork of a type of an oak tree wherein each hole was surrounded by a wall. This reminded him of the cells in which monks lived. The cells he saw were dead. The boxlike structures he saw were the remains of cells that were once alive. Every organism is made of cells and every cell comes from another cell. This idea is the cell theory
Hi, got a repeater watch which I am tinkering with. Noticed that the gong has a bent and it affects the way it touches in case. How do I adjust and unbent it, simply forcing it is likely to snap the gong I believe!
Cells! Hooke was viewing cells in cork tissue, so he was viewing plants. He compared what he saw to monastery "cells." Hence the name.
Coin silver case appears to be European made but the movement is signed Robert Frazer, Lexington, KY. According to the latest book, "Silversmiths, Jewelers, Clock and Watchmakers of KY" Robert Frazer is listed as a watchmaker and silver maker from Ireland who immigrated to Paris, KY in 1799.
The arrow points to the gathering pallet which also sits on the arbor square on top of the pulley, and it drives the quarter rack, (with the two sets of three teeth), past both the hammers to sound the 'ting-tang' for the quarters.
Hi Everyone, I have this heirloom pocket watch and I’m trying to learn more about it. I can’t open the case to see the movement - requires one of those case knives I don’t have. It’s open-face about 1860s I think. Has a George Washington engraving on the back. 18K solid gold case. Not...
Hi I am totally new to this, My Dad brought this watch at a auction a few years ago, he has just given it to my son, Can any one tell me any thing about it please ? How old it is ? stamped 925 , 17655 WHS 7 JEWELS 87629 Any help would be really appreciated regards Trevor
Antonie van Leeuwenhoek Antonie van Leeuwenhoek, spent a lot of time looking at things under microscopes, and identified living cells, calling them animalcules. Don't confuse his with his English contemporary and first person to classify cells under a microscope, Hook