It has been observed that any conductor when conducts current exhibit the following phenomenons

1. Change in Temperture

This is known as Black Body Radiation

## Experiment

Connect voltage source with a conductor in a closed loop. Measured the value of current at different frequency. The graph of I - f shows that ## Observations

Radiant Heat energy is a wave travels at speed v = λ f at all frequencies f less than fo carries an energy level E = m v2. At fo, Radiant Heat energy reaches its peak value and travels with speed equals to speed of light in the vaccum v = C = 3 x 108 carries an energy level E = h fo. At any frequencies greater than fo, Radiant Heat energy remain the same for all frequency f > fo carries an energy level E = h nfo

Frequency Speed Wavelength Energy
f < fo v = λ f λ = ${\frac {v}{f}}$ E = m v2
f = fo v = C = λ fo λ = ${\frac {C}{fo}}$ E = h fo
f > fo v = C = λ nfo λ = ${\frac {C}{nfo}}$ E = h nfo

## Summary

Frequency Speed Wavelength Energy
f < fo v = λ f λ = ${\frac {v}{f}}$ E = m v2
f = fo v = C = λ fo λ = ${\frac {C}{fo}}$ E = h fo
f > fo v = C = λ nfo λ = ${\frac {C}{nfo}}$ E = h nfo
1. Every conductor has a maximum absorb energy at Threshold frequency , fo
2. Light Wave of Radiant Heat Energy radiates from any current conducting material has a Particle Wave Duality Characteristic . Sometimes it behaves like Particle, sometimes it behaves like Wave.
3. Energy is quantized for f > fo and can only have an integer multiply by frequency E = h f
4. Short Wavelength calculated $\lambda ={\frac {C}{f}}$ 