Are wavelength and intensity of light the sme thing?

Question

I was just wondering if the wavelength and the intensity of light mean the same thing. For example if wavelength for yellow light is 578nm does it mean that the intensity of the light is 578nm.

Also (more importantly) would that mean that yellow light with wavelength 578nm is more intense than green light with wavelength 540nm? Or is it less intense.

I don't understand this concept of how wavelength and intensity of light are related.

Answer 1

Wavelength is just that it's how long or short the light waves are which is what gives them their color. Intensity is how strong the light is. You can also look at it this way...wavelength is frequency and intensity is amplitude.



Need to know if you are referring to LEDs, incandescent or what.



Also in reference to the human eye....response peaks ~550

nanometers and peters out around 450 and 675 respectively.



All photo electric components have a peak response curve. Most photo transistors and photo diodes have their greatest sensitivity in the infrared to near infrared while most photovoltaic cells operate with most efficiency centered somewhat around the visible spectrum.

Answer 2

they are not the same. Light can be considered mathematically like a wave and wavelength is the distance a wave takes before the waveform repeats itself.



Intensity can be considered as a measure of the energy that is incident on a unit surface in unit time. They are in fact independent of each other. Any wavelength of light can have any intensity.



Einstein proved that the energy of light is also independent of the intensity of the light which is counter intuitive. It is easier to imagine intensity when you consider light as photons (particles) which is another way to describe light mathematically. They are both valid so light is both - referred to by most as a wavepacket and still not entirely understood.



It would make it a little easier if you described whether you are using a photovoltaic cell etc. to answer your question about retarding potentials.

Answer 3

intensity is measured by closenss of waves



wavelength determine color regardless of intensity



The max electicity is the speed of electrons



intensity is the consontration of light