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Packers and Movers in London

civil engineering

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electrical engineering

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Fonte (English)	Destino (English)
Atoms, the smallest particles of matter that retain the properties of the matter, are made of protons, electrons, and neutrons.	Zeeshan@917
Protons have a positive charge, Electrons have a negative charge that cancels the proton's positive charge.	Zeeshan@917
Neutrons are particles that are similar to a proton but have a neutral charge.	Zeeshan@917
There are no differences between positive and negative charges except that particles with the same charge repel each other and particles with opposite charges attract each other.	Zeeshan@917
If a solitary positive proton and negative electron are placed near each other they will come together to form a hydrogen atom.	Zeeshan@917
This repulsion and attraction (force between stationary charged particles) is known as the Electrostatic Force and extends theoretically to infinity, but is diluted as the distance between particles increases.	Zeeshan@917
When an atom has one or more missing electrons it is left with a positive charge, and when an atom has at least one extra electron it has a negative charge.	Zeeshan@917
Having a positive or a negative charge makes an atom an ion.	Zeeshan@917
Atoms only gain and lose protons and neutrons through fusion, fission, and radioactive decay.	Zeeshan@917
Although atoms are made of many particles and objects are made of many atoms, they behave similarly to charged particles in terms of how they repel and attract.	Zeeshan@917
In an atom the protons and neutrons combine to form a tightly bound nucleus.	Zeeshan@917
This nucleus is surrounded by a vast cloud of electrons circling it at a distance but held near the protons by electromagnetic attraction (the electrostatic force discussed earlier).	Zeeshan@917
The cloud exists as a series of overlapping shells / bands in which the inner valence bands are filled with electrons and are tightly bound to the atom.	Zeeshan@917
The outer conduction bands contain no electrons except those that have accelerated to the conduction bands by gaining energy.	Zeeshan@917
With enough energy an electron will escape an atom (compare with the escape velocity of a space rocket).	Zeeshan@917
When an electron in the conduction band decelerates and falls to another conduction band or the valence band a photon is emitted.	Zeeshan@917
This is known as the photoelectric effect.	Zeeshan@917

Packers and Movers in London

painting

United Kingdom

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Nov 11, 2022

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Nov 11, 2022