2007-10-11 14:26:09 · 4 answers · asked by sara w. 2 in Science & Mathematics ➔ Chemistry
well first of all we have the Geiger-Marsden experiment involving some gold foil. This is how they did it. they shot some alpha particles at some very thin gold foil. what they thought would happen would be compared to shooting a bullet at a tissue; it would go right though. this is mostly what happened but some of alpha particles bounced from its origanol path. From this observation Rutherford concluded that the atom contained a very physically-small (but very dense)(as compared with the size of the atom) positive charge, which could repel the alpha particles if they came close enough, subsequently developed into the Bohr model.
look up borh model
2007-10-11 14:43:14 · answer #1 · answered by zanad m 4 · 0⤊ 0⤋
many of the products of abiogenesis have been discovered and such cells have been made interior the lab yet they do no longer proceed to stay. Harvard estimates the main to abiogenesis would be discovered interior twenty years. All present cells could be examined to be sure what's interior them. all of them have nicely-known chemical compounds. there is not any magic interior a cellular. 2) you're heavily at a loss for words (undereducated) approximately sexual reproduction. initially, organisms reproduced without intercourse. finally, sexual reproduction grew to alter into achieveable, yet they did no longer as we communicate lose the skill to reproduce asexually. Even right this moment, there are organisms that reproduce the two methods and there are some which could swap genders. human beings fetuses enhance with the two genders and it particularly is merely the presences of testosterone interior the make that motives the male intercourse organs to enhance greater desirable with the female organs failing to greater desirable enhance. how are you able to think of that hundreds of the main smart and knowledgeable human beings interior the international does no longer have discovered the failings you declare in the event that they have been extremely a undertaking? And, whether there are flaws, there is 0 evidence for any deities, and actually no evidence of a undeniable deity that demands us to worship him.
2016-11-08 01:25:57 · answer #2 · answered by fones 4 · 0⤊ 0⤋
JJ Thomson discovered the electron in a cathode ray experiment.
E Rutherford discovered the nucleus and its positive charge in an alpha particle experiment.
2007-10-11 14:36:54 · answer #3 · answered by reb1240 7 · 0⤊ 0⤋
The cathode ray experiment by J.J Thompson and another Neil Bhour
2007-10-11 14:37:59 · answer #4 · answered by Dr Knight M.D 5 · 0⤊ 0⤋