Snell's Law & EMR

[agaubr]

Thompson measured the mass of the electron and found that in order for the atom to be neutral then elelctrons would be distributed in the postive region of the atom randomly like plums in a pudding. Rihterford designed his experiemnt ot tets the pudding hteory and since he saw deflection of the positively charged alpha particles at very large angles and 180 degress then the puding model must be wrong. The proosed concept of a cntralized neuclus with all the positive charges there was proposed.

 

Ag

[agaubr]

The fact a positive charge nucleus existed opne up another can of worms to be explained. How can a central area of compact positive charge exist since the repulsive forces shoud create and unstable situation. So something else must be in operation for the nucleus to say together. Today we talk of the strong and weak nuclear foces to explain this.

 

Ag

[-Demosthenes-]

agaubr said in post #26 :

Thompson measured the mass of the electron and found that in order for the atom to be neutral then elelctrons would be distributed in the postive region of the atom randomly like plums in a pudding. Rihterford designed his experiemnt ot tets the pudding hteory and since he saw deflection of the positively charged alpha particles at very large angles and 180 degress then the puding model must be wrong. The proosed concept of a cntralized neuclus with all the positive charges there was proposed.

 

Ag

[sic]

Mini universe?

 

Do these forces, that keep the electrons floating around the nucleus, are they like gravity? But if it is gravity, won't it fail eventually? Won't the moon eventually fly into us or fly away? Or is it something different?

 

Thanks

[agaubr]

The force mainly holding the electron close to the nucleus is a positive and negative charge attraction of each other but the speed of the electron at close to the speed of light causes the electron to want to spin out of orbit so you have a balance of the potential and kinetic energies. Now the simple concept od the orbit does imply that eventually the elecronhuld spin into the nucleus due forces of friction or other which robs the energy from the electron to spiral into the nucleaus similar to a satellite falling form the sky due to lossof energy from friction etc.

 

Ag

[agaubr]

Now a modification of the model for the electron orbit was made after Bohr which allowed for the electron to be present in a particular space from the nucleus depending on the enegry of the electron or quantitization of the energy levels. To mve from one energy level to another would require the electron to loose or gain energy. The loosing of energy say as light is why hot objects glow so the elctrons get excited and then loose a photon of light and lower their energy. This field of endeavor is commonly called quantum mechanics and gets real mathmatically intense. This has led to the additional area of a new model called string theory said to unite the forces of gravity, strong nuclear force, weak nuclear force, and electromagnetic from the large body problems to the very small body issues traelling at the speed of light.

 

Ag