1. Resistance thermometers

2. Know what do you about Resistance? What is Resistance ? Meaning of Resistance? Where can we use Resistance? We take before Resistance? In physics? Try to answer this question!

3. See this video Resistance thermometers

4. Just think about this two wards ? What does it mean ? Resistance thermometers

5. Electrical resistance thermometers- measure temperature by measuring resistance in a wire Resistance thermometers Definition

8. Resistance thermometers work on the principle that the resistance of a metal varies with temperature when accurate laboratory measurements are required only standard platinum resistance thermometers (SPTS) are Resistance thermometers

9. used there are two reasons for this :

10. Platinum is not only a noble metal but also the most electrically stable metal known to man

11. The platinum resistance thermometers PRT are the reference on which the international definition of temperature is based. Resistance thermometers

12. Advantage of Resistance thermometers

13. Display is easy to read

14. Rapid response

15. Accurate over broad temperature range

16. disadvantage

17. Tends to “drift” years of use

18. expensive

19. Summary Resistance thermometers

20. Definition : Resistance thermometers

21. Electrical resistance thermometers- measure temperature by measuring resistance in a wire Resistance thermometers

22. How it works ? Resistance thermometers

23. Resistance thermometers work on the principle that the resistance of a metal varies with temperature when accurate laboratory measurements are required only standard platinum resistance thermometers (SPTS)

24. Why we use platinum ? Resistance thermometers

25. 1.noble metal Resistance thermometers

26. most electrically stable metal Resistance thermometers

27. Advantage of Resistance thermometers

28. Display is easy to read

29. Rapid response

30. Accurate over broad temperature range

31. disadvantage

32. Tends to “drift” years of use

33. expensive

34. I hope you under stand the lesson ? Resistance thermometers

35. Miss: shaimaa 3arfa Physics Done: marim abdel karim gado