Davisson Germer Experiment
Δημοσιεύτηκε στις 31 Μαρ 2013
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Davisson Germer Experiment
In
the experimental set up Davisson and Germer there is a filament of
tungsten coated with barium oxide, which on heating with the electric
current from a battery emits large number of electrons. There is a
hollow metallic cylinder with a hole along the axis. This hollow metal
cylinder surrounds the filament and is kept at negative potential, so
that the electrons emitted from filament may form a convergent beam of
electrons. The hollow metallic cylinder acts as cathode. The other
cylinder with a fine hole along its axis is kept at positive potential
with respect to the cathode, acts as anode. The cathode and the anode
form an electron gun, by which a fine beam of electrons can be obtained
under different accelerating potentials applied between cathode and
anode. There is a nickel crystal cut along the cubical diagonal and one
more instrument is electron detector rotating on a circular scale and
is connected to a sensitive galvanometer to record the amount of
current.
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Davisson Germer Experiment
In
the experimental set up Davisson and Germer there is a filament of
tungsten coated with barium oxide, which on heating with the electric
current from a battery emits large number of electrons. There is a
hollow metallic cylinder with a hole along the axis. This hollow metal
cylinder surrounds the filament and is kept at negative potential, so
that the electrons emitted from filament may form a convergent beam of
electrons. The hollow metallic cylinder acts as cathode. The other
cylinder with a fine hole along its axis is kept at positive potential
with respect to the cathode, acts as anode. The cathode and the anode
form an electron gun, by which a fine beam of electrons can be obtained
under different accelerating potentials applied between cathode and
anode. There is a nickel crystal cut along the cubical diagonal and one
more instrument is electron detector rotating on a circular scale and
is connected to a sensitive galvanometer to record the amount of
current.
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http://www.facebook.com/tutorvista
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