Search Results - Electron
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5.4857990943(23)×10-4&_160;u[7]
[ 1,822.88850204(77)] -1&_160;u [note 1]
0.510998910(13)&_160;MeV/c2[7]An electron is a subatomic particle that carries a negative electric charge. It has no known substructure and is believed to be a point particle.[2] An electron has a mass that is approximately 1836 times less than that of the proton.[8] The intrinsic angular momentum (spin) of the electron is a half integer value of 1/2, which means that it is a fermion. The antiparticle of the electron is called the positron, which is identical to the electron except that it carries electrical and other charges of the opposite sign. When an electron collides with a positron, they annihilate, producing a pair (or more) of gamma ray photons. Electrons, which belong to the first generation of the lepton particle family,[9] participate in gravitational, electromagnetic and weak interactions.[10] Electrons have quantum mechanical properties of both a particle and a wave, so they can collide with other particles and be diffracted like light. Since an electron is a fermion, no two electrons can occupy the same quantum state, a property known as the Pauli exclusion principle.[9] The concept of an indivisible amount of electric charge was theorized to explain the chemical properties of atoms, beginning in 1838 by British natural philosopher Richard Laming;[4] the name electron was introduced for this charge in 1894 by Irish physicist George Johnstone Stoney. The electron was identified as a particle in 1897 by J. J. Thomson and his team of British physicists.[6][11] In many physical phenomena, such as electricity, magnetism, and thermal conductivity, electrons play an essential role. An electron generates a magnetic field while moving, and it is deflected by external magnetic fields. When an electron is accelerated, it can absorb or radiate energy in the form of photons. Electrons, together with atomic nuclei made of protons and neutrons, make up atoms. However, electrons contribute less than 0.06% to an atom's total mass. The attractive Coulomb force between an electron and a proton causes electrons to be bound into atoms. The exchange or sharing of the electrons between two or more atoms is the main cause of chemical bonding.[12]
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Showing 1 to 25 of 109 Articles matching 'Electron' in related articles. |
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1. Auto Blister Packaging Machine PDPBO-250(320)H
October 16, 2009
This Auto Blister Packaging Machine is widely used for capsule, tablet, etc. in pharmaceutical industry, medical apparatus, electron or hardware industry as all kinds of shapes of ALU-ALU, ALU-plastic, paper-plasatic combined sealing packing. CHARACTERISTIC * The electric appliance of this machine adopts PLC to control, temperature module, touch panel to operate, ease of cleaning, can be equipped with cursor device etc as customer require. * Machine-tool track type of casting machine-base, taken these processing like backfire, maturing, high benchmark and without distortion. ... (read more)
Author: Xian Feng
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2. What is a prepaid card?
October 16, 2009
A payment card (usually Visa Electron, Amex, Maestro or MasterCard), already loaded with your own money, you are able to then use it in all places that accept this payment card, including on the Internet and places abroad.A prepaid credit card is very similar to gift cards available from most high street storesin Britain, however, prepaid card have a very wide recognition, and can be used abroad. Very similar to credit cards, but without the credit. A large number of of UK prepaid credit card providers are now supplying cards embossed with your own name.How To Qualify for a Prepaid Credit Card... (read more)
Author: Dan Gibbs
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3. Used Welding Equipment - Various Procedures Where it is Being Used
October 05, 2009
Welding device comprises of objects or gadgets used for a wide variety of functions. Joining methods such as arc, orbital, laser, resistance, stud and electron beam welding are some of the procedures relying on these industrial items. Among a list of methods provided by used welding equipment are wave soldering and a range of brazing skills.Welding gadget may operate through the help of a welding power source. Weld controllers are also required in order to help the methods served by these devices. Other systems included pieces such as robots, positioners, feeders, cables torch and cutting tool... (read more)
Author: Agustin Steele
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4. Dust Mite Mattress Covers: Playground for Mites
October 05, 2009
Almost a quarter of dust mites in a regular house are focused in the mattress. The hub of dust mites is centered at foam-based cushions and sofas aside from the usual inhabitance mattresses. These microscopic critters are visible to humans using the electron microscope. The dust mites in mattresses are very hard to get rid of in total. Vacuuming is an alternative approach to removing dust mites but this is actually a remedial method. We are often reminded that it is always better to prevent a situation rather than waste precious time and energy fixing it. In the case of dust mite allergies, i... (read more)
Author: Chris Cornell
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5. Dust Mite Allergies - Allergies Caused by Household Dust Mites
October 05, 2009
We generally do not fuss about things that can only be viewed using high-powered electron microscopes but little do we know about the health hazards of dust mite allergies? What are dust mites? These are microscopic creatures that feed on dead tissues. Yes, dead tissues deriving from our daily flaking of skin and hair cells are the main supply of food for household dust mites.
Dust mites live in fabrics, pillows, carpets and other soft materials. A single bed may contain literally million of dust mites. These dust mites produce waste. These fecal matters consist of mild proteins that ca... (read more)
Author: Chris Cornell
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6. The Top 5 Fatal Diseases
October 01, 2009
The fact is there are 5 diseases that are fatal to humans, the first one is heart attack, the second is cancer, then stroke, lung disease and last but moving up fast in the list is diabetes. The fatal five share two common elements, Free radicals and inflammation. Free radicals are molecules or atoms that are missing an electron, the free radicals attack any healthy cells they come in contact with and steal an electron causing damage to the cell membrane. Inflammation is a process that is intended to help our body heal but in the case of disease, free-radicals cause deformities or mutations i... (read more)
Author: Santosh Vishwakarma
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7. What Are Electronic Components And Semiconductors?
September 18, 2009
Before going into the subject of electronic components and semiconductors , we must first of all know the meaning of electronics. By electronics we mean the study and use of electrical devices that are operated by controlling the flow of electrons or other electrically charged particles in devices such as thermionic valves and semiconductors.
An electron is one of the most important types of subatomic particles. Electrons combine with protons and (usually) neutrons to make atoms. Electrons are much smaller than neutrons and protons. The mass of a single neutron or proton is more than 1,... (read more)
Author: mad scan
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8. Auto Blister Packaging Machine PDPBO-250(320)H
September 11, 2009
This blister packaging machine is widely used for capsule, tablet, etc. in pharmaceutical industry, medical apparatus, electron or hardware industry as all kinds of shapes of ALU-ALU, ALU-plastic, paper-plasatic combined sealing packing. CHARACTERISTIC * The electric appliance of this machine adopts PLC to control, temperature module, touch panel to operate, ease of cleaning, can be equipped with cursor device etc as customer require. * Machine-tool track type of casting machine-base, taken these processing like backfire, maturing, high benchmark and without distortion. * Each box... (read more)
Author: Xian Feng
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9. Antioxidants, I beg your pardon? Important Are They?
September 10, 2009
Antioxidants, I beg your pardon? Important Are They?
Might it come about Super Antioxidants are the solution to youth? It has develop into the buzz word. We hear each time on the order of eating healthy with the exact foods to provide our body with the basic ingredients to fight the Free Radicals. Okay, okay, okay, roll the tape back…..
Let’s have a discussion on the subject of free radicals initially. What is it? Going back to chemistry it is a harmful molecule with the intention of damages the body. It has an unpaired electron with the intention a search and annihilate missio... (read more)
Author: Ellie Monski
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10. Antioxidants, Do You Really Need Them?
September 10, 2009
Can it be real? Super Antioxidants are the answer to youth? It has turn out to be the buzz word. We hear all day of the week on the subject of eating healthy with the appropriate foods to provide our body with the vital ingredients to fight the free Radicals. Okay, okay, okay, roll the tape back…..
Let’s conference in this area of free radicals to start with. What is it? Going back to chemistry it is a harmful molecule with the purpose of damaging the body. It has an unpaired electron with the purpose of a search and wipe out mission to catch a weaker, molecule. On the search and ... (read more)
Author: Ellie Monski
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11. Antioxidants, What Good Are They?
September 10, 2009
Could it be Super Antioxidants are the key to youth? It has become the buzz word. We hear every day about eating healthy with the right foods to provide our body with the necessary ingredients to fight the Free Radicals. Okay, okay, okay, roll the tape back…..
Let’s talk about free radicals first. What is it? Going back to chemistry it is a harmful molecule that damages the body. It has an unpaired electron that is on search and destroy mission to find a weaker, molecule. On the search and destroy mission the electron will split up the weaker molecule making a paired electron leavin... (read more)
Author: Ellie Monski
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12. Amba trading company is a authorized Importer, dealer and supplier of RF transistors for broadcasti
September 02, 2009
Amba trading company is a authorized Importer, dealer and supplier of RF transistors for broadcasting located in Delhi, India. We are authorized dealer of premium brands of RF transistors, Air traffic control products & spares, Electron tubes and valves, RF microwave semiconductor & spares in Delhi.
UKC Ltd (UK) Manufacturing - RF Transistors & Diodes Chelmer valve Company Ltd.(U.K) Manufacturing - Electron tubes & Valves For industrial & Broadcast Applications.
We are in deal sale of RF transistors for broadcasting since 1976. Our Products are :
1.(i) RF transistors TP9383... (read more)
Author: Raj singh
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13. www.aypearl.com explain Gemstone and Health
August 31, 2009
Since ancient times, the Chinese have the habit of wearing jade. For the defense of the matter is not auspicious to longevity. In traditional medical treasure- the jade can be medicine to make people calm and quite. Amethyst, pearl, amber and so on have been used as drugs. According to medical research, Jade has a high-intensity electronic, electron diffraction can be enough to affect the release of the body's bio-electricity, to stimulate the endocrine regulation of energy metabolism.
Gem has specisal photoelectric effect. forme of an electromagnetic field while in cutting, grinding... (read more)
Author: yue Wang
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14. Resveratrol and Cancer Protection - Stop Free Radicals
August 14, 2009
Have you read about resveratrol and cancer? Finding something that can put a stop to or at least slow down this fatal disease is what we’ve all been waiting for.
Resveratrol is an antioxidant found in the skin of red grapes and in red wine. You can also find it in mulberries and a small amount in peanuts. And it is available in supplement form.
Antioxidants have the ability to destroy free radicals, which are those rascals that steal electrons from healthy molecules. When a molecule loses an electron it becomes unstable and needs to go to another healthy molecule and steal an ele... (read more)
Author: Elizabeth Ruby
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15. Should You Be Scared of the Free Radicals in Your Body?
August 11, 2009
What is a free radical? You may have heard the words around and notice yourself wondering what is all the buzz?
I have to take you back to chemistry. Atom, protron, and neutrons, yes we have to start with the basics.
It is an atomic structure. It has a single electron or upaired that basically is looking for a home. The unpaired radical is highly reactive creating a chemical reaction that is unstable.
The free radicals circulate through our body looking to grab onto cells. Changing the structure of the cells there is damage to the cells, proteins, and DNA. With the change of the... (read more)
Author: Ellie Monski
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16. Free Radicals, Are You At Risk?
August 10, 2009
What is a free radical? You may have heard the words around and discover yourself wondering what is all the buzz?
I have to take you back to chemistry. Atom, protron, and neutrons, yes we have to start with the basics.
It is an atomic structure. It has a single electron or upaired that basically is looking for a home. The unpaired radical is highly reactive creating a chemical reaction that is unstable.
The free radicals circulate through our body looking to grab onto cells. Changing the structure of the cells there is damage to the cells, proteins, and DNA. With the change of t... (read more)
Author: Ellie Monski
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17. Free Radical, What is it?
August 10, 2009
What is a free radical? You may have heard the words around and find yourself wondering what is all the buzz?
I have to take you back to chemistry. Atom, protron, and neutrons, yes we have to start with the basics.
It is an atomic structure. It has a single electron or upaired that basically is looking for a home. The unpaired radical is highly reactive creating a chemical reaction that is unstable.
The free radicals circulate through our body looking to grab onto cells. Changing the structure of the cells there is damage to the cells, proteins, and DNA. With the change of the c... (read more)
Author: Ellie Monski
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18. Coenzyme Q10
August 07, 2009
Coenzyme Q10 is an oil-soluble substance with vitamin-like properties. The substance is contained in most types of eukaryotic cells and is a primary substance present in mitochondria. Coenzyme Q10 is an important ingredient in the electron transport chain and is useful in several important biological activities like aerobic cellular respiration and ATP generation. These comprise 90 percent of energy generation in the human body Discovery Coenzyme Q is pronounced like Coke U-10. Professor Andrew L. Crane and his colleagues at the University of Wisconsin-Madison Enzyme Institute were the fir... (read more)
Author: Smith Anderson
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19. Health Official Says Swine Flu Has Peaked, for Now, in Britain
July 31, 2009
Electron micrograph of swine flu virusThe chief medical officer in Britain says it looks as though the swine flu outbreak may have plateaued in England for now. At least 27 people have died of the disease and the government is continuing its preparations for a possible resurgence in the fall flu season. The number of Swine Flu cases in England seems to have plateaued for now. "We expect that to last a little bit longer, but then in the fall and winter we will see a very big surge, as we have seen in previous pandemics," Britain's Chief Medical Officer Liam Donaldson told VOA.But, he says, mor... (read more)
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20. Why You Should Never Buy Computer Electronics at Fry's Electronics, Best Buy, or Any Other Electron
July 30, 2009
I love to go to Fry's Electronics and Best Buy and browse through the computer hardware sections admiring each and every hard drive, graphics card, memory stick I can find. Watching someone actually buy these shiny electronics in their brand new packaging makes me cringe. I have to restrain myself from running up to the old grandma with her grandson in tow, lugging that new E-Machines computer and tell her to "Put it back, you're being ripped off". I'm sure she was told by a sales man that it was a great value for such a cheap price, but he didn't mention that it met the bare minimum of Window... (read more)
Author: Steffan McMurrin
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21. Why We Aging
July 08, 2009
1. Free radical levels in our body has to be maintained in a small quantity to make them helpful to our body. However, excess free radicals created by the chemical process-- oxidation, are found to accelerate your aging. Because free radicals can acquire electron from other molecules in our body thereby left that molecule and/or cell damaged. Excess free radicals are more easily generated in our body through oxidation by environmental pollutions and radiations (sun UV light). Antioxidant is a group of molecules that can neutralize free radicals thereby is a common component in anti-aging skin ... (read more)
Author: Weiwei Qian
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22. The technology behind plasma television display
July 08, 2009
In the last 75 years all the televisions built revolved around the same technology called cathode ray tube (CRT) which had a large cathode gun inside a glass casing and would fire electrons onto the phosphor atoms across the wide screen. By varying the intensity of the electron beam we get different colors. For this reason television were huge in size as the bigger displays needed guns at a farther distance to cover the whole screen. Thus any big CRT television would weigh a ton and would be almost the size of an average room. But nowadays CRT television has become a thing of the past with p... (read more)
Author: annie nelson
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23. Lasers can lengthen quantum bit memory by 1,000 times
July 08, 2009
Physicists have found a way to drastically prolong the shelf life of quantum bits, the 0s and 1s of quantum computers.
These precarious bits, formed in this case by arrays of semiconductor quantum dots containing a single extra electron, are easily perturbed by magnetic field fluctuations from the nuclei of the atoms creating the quantum dot. This perturbation causes the bits to essentially forget the piece of information they were tasked with storing.
A quantum dot is a semiconductor nanostructure that is one candidate for creating quantum bits.
The scientists, including the Un... (read more)
Author: Shane Ennerson
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24. Laser Created Temporal Lens Could Lead to Movies of Molecular Processes
July 08, 2009
A team at the University of Nebraska-Lincoln has figured out a possible way to observe and record the behavior of matter at the molecular level. That ability could open the door to a wide range of applications in ultrafast electron microscopy used in a large array of scientific, medical and technological fields.
Finding a way to observe and record the behavior of matter at the molecular level has long been one of the holy grails among physicists. That ability could open the door to a wide range of applications in ultrafast electron microscopy used in a large array of scientific, medical a... (read more)
Author: Shane Ennerson
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25. X Ray Technologists or Radiologic Technologists Profiled
June 26, 2009
Radiology / X-Ray – a fascinating world of medicine and technology!
Did you know that x-rays were invented by accident?
In 1895, a German physicist named Wilhelm Conrad Roentgen made a discovery, which he later termed “x-rays,” while experimenting with an electron beam in a gas discharge tube. Roentgen noticed that a fluorescent screen in his lab started to glow when the electron beam was turned on. Roentgen's tube was surrounded by heavy black cardboard, so he continued to investigate what mysterious entity might be traveling right through matter. This discovery laid the foundatio... (read more)
Author: R Govindan
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