Description
Physics - Thermo-electricity, Thomson Observation
Watch / check video recording on thermo electricity. Graphical representation of given data is really important. Student should know what conclusion can be extracted from the graph. All the types of graphs should be studied well with good understanding. Of course mathematics is an important tool for physics. I recommend all my students to improve lot of mathematics .... at least essentials like basics of differentiation.
Presentation Transcript
Thomson Observation : Thomson Observation Copper Wire Heat is evolved along a Cu wire when current passed from hotter to colder end.
Heat is absorbed along the Cu wire when current is passed from colder to hotter end.
REASON: for Cu: Hot end is at a higher potential and cold end is at a lower potential. Bismuth Wire Heat is absorbed along a Bi wire when current is passed from hotter to colder end.
Heat is evolved along a Bi wire when current is passed from colder to hotter end.
REASON: for Bi: Hot end is at lower potential and cold end is at higher potential.
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