Experiments to prove particle and wave property of Electrons:a) Verification of Wave character:
i) Davisson and Germer’s Experiment:
In the year 1927 Davisson and Germer noticed that, a beam of electrons acquired from a heated tungsten filament is accelerated by employing a high positive potential. Whenever this fine beam of accelerated electron is permitted to drop on a large single crystal of nickel, the electrons are scattered from crystal in various directions.
The diffraction pattern thus obtained is alike to the diffraction pattern acquired by Bragg’s experiment on diffraction of X-rays from a target in similar manner.
Figure: Electron diffraction experiment by Davisson and GermerAs X-rays have wave character, thus, the electrons should also have wave character related with them. Furthermore, the wave length of the electrons as established by the diffraction experiments were found to be in agreement with the values computed from de-Broglie equation.
From the above conversation, it is clear that an electron acts as a wave.ii) Thomson’s experiment:
G.P. Thomson in the year1928 executed experiments with thin foil of gold in place of nickel crystal. He noted that when the beam of electrons after passing via the thin foil of gold is received on the photographic plate located perpendicular to the direction of the beam, a diffraction pattern is noted as before (figure shown below).
This again verified the wave nature of electrons.
Figure: Diffraction of electron beam by thin foil of gold (i.e., G.P. Thomson experiment)b) Verification of the particle character:
The particle character of the electron is verified by the different experiments explained below:-
i) Whenever an electron strikes a zinc sulphide screen, a spot of light termed as scintillation is formed. Scintillation is localized on the zinc sulphide screen. Thus the striking electron which generates it also should be localized and is not spread out on the screen. However the localized character is possessed by particles. So electron has particle character.
ii) Experiments like J.J.Thomson’s experiment for determination of ratio of the charge to mass (that is, e/m) and Milliken oil drop experiment for the determination of charge on electron also illustrate that electron has particle character.
iii) The phenomenon of Photoelectric effect and Black body radiation also confirm the particle nature of radiation.
Latest technology based Chemistry Online Tutoring Assistance
Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Atomic Structure homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Atomic Structure, project ideas and tutorials. We provide email based Atomic Structure homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Atomic Structure. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Inorganic-Chemistry Homework Help and assignment help services. They use their experience, as they have solved thousands of the Chemistry assignments, which may help you to solve your complex issues of Atomic Structure. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.
basics of monopoly and key concepts of monopoly, monopsony, inframarginal units, contribution margin, cartel, horizontal integration and vertical integration, get tutors answer for managerial economics questions.
rectify the weak sound (low volume) in am radio receiver - possible stages - power supply, audio amplifier and output., if amplifier and detector.
Application of Dyes-Pigments tutorial all along with the key concepts of Overview of the Important Applications of Pigments, Industrial Application of Dyes and Pigments, Colourants for Agriculture Industry, Paper industry, Pigments in Paints Industry, Wire and Cable Industry
Solid state Amplifiers tutorial all along with the key concepts of Basic technical principles, Solid state devices, Advantages of Vacuum tubes, Disadvantages Transistors
Theory and lecture notes of Two Parameter Testing concepts all along with the key concepts of Two parameter testing, Dependent Samples and Independent Samples. Tutorsglobe offers homework help, assignment help and tutor’s assistance on Two Parameter Testing concepts.
tutorsglobe.com monetary transmission assignment help-homework help by online monetary policy tutors
tutorsglobe.com hypersensitivity reactions assignment help-homework help by online immunology tutors
Need a trustworthy Nursing Assignment Help at viable prices? Get online support from PhD tutors to score well!
tutorsglobe.com urea cycle assignment help-homework help by online protein metabolism tutors
Mixer and Grinder are kitchen appliances which make easy the task that is related with mixing and crushing the food.
tutorsglobe.com entrepreneurship assignment help-homework help by online meaning of production tutors
Theory and lecture notes of von Neumann-Morgenstern Utility Function all along with the key concepts of von neumann-morgenstern utility function, Concave Function, Determining risk premium. Tutorsglobe offers homework help, assignment help and tutor’s assistance on von Neumann-Morgenstern Utility Function.
Heterocyclic Compound tutorial all along with the key concepts of Occurrences of Heterocyclic Compounds, Classification of Heterocyclic compounds, Five membered Heterocyclics, Six-membered Heterocyclics, Condensed Heterocyclics and Naming Heterocyclic Compound
tutorsglobe.com marginal cost of capital assignment help-homework help by online capital structure tutors
Interactions in an Ecosystem tutorial all along with the key concepts of Competition, Predation, Parasitism, Symbiosis, Commensalism and Saprophytism
1943307
Questions Asked
3689
Tutors
1446076
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!