Electrons

Electrons are little thingys (maybe particles, maybe waves) that occupy a certain probability density in the vicinity of an atomic nucleus. (No matter what you hear, they are thought to not be blue.) Many of us think we have "seen" them while looking at Crooke's tubes. I have never felt an electron but I have felt the effects of the charge carried by an electron. It is named electron from the Greek word for amber. The charge carried by the electron makes possible all electronics unless you believe in holes (and that takes a much longer answer). ELECTRONics = ELECTRON.

but i don't think so can u explain me with any practical wxample that wat u felt>\?

.No haven't seen one. the apparatus I use to see with is constructed of bigger things. I think of them as tiny round balls. Why? because a lot of things in nature is round.

But have a look at electron microscopes. That will give you an indication of how small they must be.

Hello ragavan

Greetings!

You seem to have REAL scientific DOUBTS about "Electrons".. It is natural that a youngster like you would have such genuine doubts and questions. It is UNFORTUNATE that our Science Educations in India (what is called the 10+2 systems) DO NOT HELP YOUNGER GENERATION TO UNDERSTAND CONCEPTS, LAWS/ PRINCIPLES OF SCIENCE and METHODS of science. Students/ candidates who wish to join Engineering courses are supposed to have had training and strong fundamentals on basic SCIENCES. But instead, the present day system has become a sort of "QUIZ CONTEST" that would NOT require Scientific analyses and Fundamental Derivations through the application of the Laws and Principles of science. Going a step further, Engineering would need that we also understand the EFFECTS of the "Laws/ Principles". For example, in this case, we as engineers are normally concerned about the EFFECTS of the "phenomenon" of Electrons.

While this writer would not wish to scuttle and pooh-pooh such original SCIENCE-PHENOMENON discussions, CR4, being an Engineer's forum, it would be prudent for us to look at various SCIENCE and "HISTORY of SCIENCE" data that are available at the many internet linked resources. Here is one excellent piece on the DISCOVERY OF ELECTRONS:

Excuse me... how can you discover a particle so small that nobody has ever seen one?

http://www.aip.org/history/electron/

The link would give most important information on questions that ragavan seem to have... and more data could be had through further various links through the same site.

POST SCRIPT: It is very clearly mentioned here that this writer in no way belittles the importance of such "enquiry" and "probe" ... as is correctly being resorted to by ragavan.

Best wishes

pvhramani

Seriously, though...

Evidence of the existence of electrons is not a simple thing that I can answer in a short paragraph or three on here. You have to go back through several decades of experiments starting in the late 1800s with work by Rayleigh, Thomson, Millikan, etc. up through the modern day standard model. At some point, you must be willing to spend several years studying all that or else you must be willing to believe what you are told by obviously educated, experienced people. At the very least, you ought to take a course in modern physics, followed by a rigorous lab course in electrical circuits.

You can choose to not believe in electrons, just as I can choose not to believe in Toledo. Our beliefs, or disbeliefs, don't affect the reality of what is really there. If you're gonna be an engineer, you need to accept a ton of things without starting at first principles. Seriously, are you going to require first hand testing of the yield point of 1045 steel before you believe it and use it?

From his other posts, it seems our Ragavan is an Engineering student and not a youngster. Well. perhaps he is, compared to some of the older engineers on CR4, but he seems to have some doubts about the education system, electrons (which ARE blue - I saw it on Discovery Channel), and things he can't see. I think he's pulling our legs folks.