There are several ways to calculate the frequency of light emitted or absorbed by different chemicals, and they depend on what you already know. For example, if you know the energy of the particle, then you can calculate frequency from E = planck's constant x frequency and solve for frequency. If you happen to know the wavelength, then you can use C = wavelength x frequency and solve for frequency (where C = speed of light).
spectroscope
4.85*10^-19
The frequency of light that is reflected or emitted by an object. So, every frequency represent another colour. Not every frequency is visible for the human eye (e.g. infra red, ultra violet).
These are detemined by the band gap (a zone without electrons) of the solid used in LED.
2.18*10^-18 j
The frequency of emitted light in a transparent object is the same as light that stimulates its re-emission.
light at a frequency similar to the absorbed frequency is emitted
Because visible light is emitted at a known frequency (a time) and then it is as simple as Speed = Distance / Time therefore Distance = Speed x Time.
spectroscope
spectroscope
No, most lasers emit light at a different frequency than UV.
Photoelectric phenomenon
You can get the wavelength by dividing the speed of light by the frequency. Don't forget that THz means 10 to the power 12 Hz.
by dividing the speed of light with its wavelength
The peak frequency is directly proportional to the absolute temperature of the emitter. Temperature increases frequency also increases.
To find (wavelength): Divide (speed) by (frequency). To find (frequency): Divide (speed) by (wavelength).
Its right in the book (in bold) and has a key next to it.