Intensity of the light in the light bulb what physicist described it?

AI Thread Summary
The intensity of light in a light bulb is influenced by the electric current passing through it. While early inventors like Thomas Edison understood this relationship, the concept of proportionality between current and light intensity is more nuanced. The principle of conservation of energy, established before the invention of the light bulb, plays a crucial role in this understanding. The discussion highlights the common misconception that light intensity is directly proportional to current. Overall, the conversation emphasizes the historical context and foundational physics behind light bulb functionality.
m_p_w
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We know that the intensity of the light in the light bulb depends on the electric current.
And I want to know who was the first physicist who proved this.
And if there is a possibility could you also tell me how, why, when, where he did this experiment or give me an website, but the name of the physicist is also enough.

thank you
 
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m_p_w said:
We know that the intensity of the light in the light bulb depends on the electric current.
And I want to know who was the first physicist who proved this.
And if there is a possibility could you also tell me how, why, when, where he did this experiment or give me an website, but the name of the physicist is also enough.

thank you

The wikipedia entry has a history of the incandescent light bulb:

http://en.wikipedia.org/wiki/Incandescent_light_bulb

:smile:
 
I'm not sure what you mean by that. If you mean simply "generally the intensity of light is greater if there is more current passing through the bulb", the first people to make light bulbs, Edison among others, knew that! After all, it follow from "conservation of energy" which long predates the light bulb. If you mean "the intensity of the light is proportional to the current", that's simply not true.
 
so it has always been a common sense that "generally the intensity of light is greater if there is more current passing through the bulb"
 
m_p_w said:
so it has always been a common sense that "generally the intensity of light is greater if there is more current passing through the bulb"

Yep.
 
Are these schoolwork questions?
 
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