Difference between revisions of "Forest ModernPhysics"

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Plank said that  
+
Plank said he could fit the Black Body radiation data assuming that that  
  
<math>E= hf</math>
+
<math>E= hf</math> where <math>h = 6.63 \times 10^{-34} \mbox{ J} \cdot s</math> = Plank's constant
  
 
Combining the two we have
 
Combining the two we have

Revision as of 20:43, 29 September 2009

Matter Waves (Wave Particle Duality)

Special relativity said that

[math]E = pc[/math] if m=0


Plank said he could fit the Black Body radiation data assuming that that

[math]E= hf[/math] where [math]h = 6.63 \times 10^{-34} \mbox{ J} \cdot s[/math] = Plank's constant

Combining the two we have

[math] p=\frac{E}{c} = \frac{ h f}{c}[/math]

[math]\Rightarrow[/math] photons have momentum like a particle (mv)

Davisson and Germer

From hyperphysics:

Davisson Germber Apparatus.gif