The effect of temperature on phosphorescence

AI Thread Summary
Increasing temperature is believed to decrease the lifetime of phosphorescence, though further explanation is not provided. A Google search using the specific problem statement yielded a relevant article from Nature as the second result, which may contain the needed information. The discussion indicates that the inquiry is related to homework, prompting a suggestion to move the thread to a general technical forum if it's not school-related. Participants express interest in verifying the search results and finding answers. The Nature article is recommended for further reading to clarify the effects of temperature on phosphorescence.
Michell
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Homework Statement
What effect does heat have on a substance with phosphorescence properties?
Relevant Equations
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I had read somewhere that as the temperature increases, its lifetime decreases. But there was no further explanation. Of course, I don't know if it's true yet.
 
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I did a Google search using your Problem Statement ('What effect does heat have on a substance with phosphorescence properties?'), and the 2nd hit gave the direct answer. Can you try that same search?

Also, is this really a schoolwork question or just something you were wondering about? I can move your thread to the general technical forums if it's not for schoolwork.
 
berkeman said:
I did a Google search using your Problem Statement ('What effect does heat have on a substance with phosphorescence properties?'), and the 2nd hit gave the direct answer. Can you try that same search?

Also, is this really a schoolwork question or just something you were wondering about? I can move your thread to the general technical forums if it's not for schoolwork.
Did Google really give a direct answer?! I tried but failed. I'd better try again.
No, this is a homework.:smile:
 
Michell said:
Did Google really give a direct answer?! I tried but failed. I'd better try again.
No, this is a homework.:smile:
The Nature article is the 2nd hit on the Google search results list:

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https://www.nature.com/articles/056102a0.pdf

1617626961328.png
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
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