Rutherford's Gold Foil Experiment And discovery of a very tiny thing called "Nucleus"
When we look at the objects around us we wonder what is that thing made of, around 2500 years ago two Greek philosopher Leucippus and Democritus came up with the idea that everything around us is made from these tiny particles, They named them A TOMOS (meaning "uncuttable" or "invisible")
IMAGE SOURCE: Self Created
IMAGE SOURCE: Self Created
(HERE COMES THE NUMBERS!!!)
Consider the variables below as …
Qn = positive charge of gold atom = 79e = 1.266×10−17 C
Qα = charge of alpha particle = 2e = 3.204×10−19 C
r = radius of a gold atom = 1.44×10−10 m
vα = velocity of alpha particle = 1.53×107 m/s
mα = mass of alpha particle = 6.645×10−27 kg
k = Coulomb's constant = 8.998×109 N·m2/C²
the alpha particle's change in momentum Δp can be calculated approximatlyusing the impulse of force relationship and the Coulomb force expression below.
The angel of deflection can be calculated as below
This is an approximate value for Θ(Theta). But even if we increase the thickness of the foil the value would only vary a little.
IMAGE SOURCE: Self Created
The experiment was conducted by pointing a beam of alpha particles to a thin foil of gold and measured the scattering using a fluorescent film. But the particle were bouncing off the gold foil like nobody's business. Which was unexpected, the particle must have encountered repulsive electrostatic force which implied that ATOM's positive charge is concentrated in the center.
A few of the particle were deflected by more than 90°.
IMAGE SOURCE: Self Created
IMAGE SOURCE: Self Created
Sources: Wikipedia.com , BBC
I would also recommend this crashcourse video on Youtube.
Daily Fun Fact #13 -- "Burps are basically mouth farts."
cool stuff bro @arrjey,,keep it up
thanks bro :)
wow amazing :)
Thank you so much
Thank you for the lovely post!
Congratulations @arrjey! You have completed some achievement on Steemit and have been rewarded with new badge(s) :
Click on any badge to view your own Board of Honor on SteemitBoard.
For more information about SteemitBoard, click here
If you no longer want to receive notifications, reply to this comment with the word
STOPCongratulations @arrjey, this post is the fifth most rewarded post (based on pending payouts) in the last 12 hours written by a Dust account holder (accounts that hold between 0 and 0.01 Mega Vests). The total number of posts by Dust account holders during this period was 3291 and the total pending payments to posts in this category was $763.89. To see the full list of highest paid posts across all accounts categories, click here.
If you do not wish to receive these messages in future, please reply stop to this comment.
Thank you