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Plastic vs Metal

Posted: Fri Apr 20, 2018 7:04 pm
by Mei Blundell_1J
We discussed this in class today, but I'm still unsure of the reason why plastic can't be used for the experiment. Is it because the experimental setup requires a conductive material, or is it because plastics (and other non-conductive materials) don't emit photons? thanks

Re: Plastic vs Metal

Posted: Fri Apr 20, 2018 7:58 pm
by AnnaYan_1l
Hi! The experiment requires a conductive material (metal), and since plastics and other materials are not conductive, the experiment wouldn't work with the use of a non-metal surface. Hope this clarifies things for you!

Re: Plastic vs Metal  [ENDORSED]

Posted: Sun Apr 22, 2018 4:47 pm
by Amir Akhavan 1E
The Professor said that the material must be able to conduct electricity and if not and electron will not be emitted after shining photons onto the object. Plastics are unable to act as conductors and thus the experiment would be unable to work.

Re: Plastic vs Metal

Posted: Sun Apr 22, 2018 6:14 pm
by Shimran Kumar 1C
What about a conductive substance that is not a metal? For example, salt water can conduct electricity, but is not a solid metal. Could the experiment still be conducted and produce an ejected electron?