Charge is Quantized and Conserved - PowerPoint PPT Presentation

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Charge is Quantized and Conserved

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Charge is Quantized and Conserved Any positive or negative charge q that can be detected can be written as in which e, the elementary charge, has the approximate value – PowerPoint PPT presentation

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Title: Charge is Quantized and Conserved


1
Charge is Quantized and Conserved
Any positive or negative charge q that can be
detected can be written as
in which e, the elementary charge, has the
approximate value
The elementary charge e is one of the important
constants of nature. The electron and proton both
have a charge of magnitude e. Quarks, the
constituent particles of protons and neutrons,
have charges of e/3 or 2e/3, but they
apparently cannot be detected individually. For
this and for historical reasons, we do not take
their charges to be the elementary charge.
Quarks http//www.youtube.com/watch?vSMgi2j9Ks9k
Higgs Boson 2013 Nobel http//www.youtube.com/wa
tch?vWBIcLqDOa2g Higgs Boson http//www.youtube.
com/watch?v649iUqrOKuE The Hunt For Higgs
http//www.youtube.com/watch?vr4-wVzjnQRI
2
Charge is Conserved
If you rub a glass rod with silk, a positive
charge appears on the rod. Measurement shows that
a negative charge of equal magnitude appears on
the silk. This suggests that rubbing does not
create charge but only transfers it from one body
to another. This hypothesis of conservation of
charge, first put forward by Benjamin Franklin,
has stood up under close examination, both for
large-scale charged bodies and for atoms, nuclei,
and elementary particles. No exceptions have ever
been found. The list of quantities that obey a
conservation law Energy, Linear momentum,
angular momentum, and electric charge. The
conservation of charge occur in the radioactive
decay of nuclei, in which a nucleus transforms
into (becomes) a different type of nucleus.
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