How Does Electron Energy Affect Atomic and Nuclear Dimensions?

AI Thread Summary
Changing the energy of electrons in electron diffraction affects their de Broglie wavelength, allowing for the investigation of atomic arrangements and nuclear dimensions. Higher energy electrons have shorter wavelengths, enabling the resolution of smaller structures, such as nuclei. This technique is crucial for understanding atomic interactions and nuclear properties. The discussion emphasizes the relationship between electron energy and the ability to probe different scales of matter. Understanding these principles is essential for advancements in materials science and nuclear physics.
liaminho
Messages
6
Reaction score
0
I need help with these two questions:

1. Electron diffraction can be used to investigate both the arrangement of atoms and the dimensions of nuclei. Explain how changing the energy of the electrons can be used to achieve this.

And...

2. Uranium has atomic number 92. Two of its common isotopes have nucleon numbers 235 and 238. How many neutrons are there in a nucleus of each of these isotopes?
 
Physics news on Phys.org
Actually, ignore question 2. I can do that one :)
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Electrons and their little role in nuclear physics
Replies
1
Views
2K
How Much Energy is Released When a Uranium Nucleus Captures an Electron?
Replies
3
Views
2K
Rutherford model of atom and Bohr model
Replies
1
Views
2K
How much of the atom's internal energy is released?
Replies
22
Views
8K
Atomic displacements, replacements, and radiation damage of structural materials
Replies
1
Views
648
I Decay constant of Different Elements and Isotopes?
Replies
3
Views
2K
Off by order of magnitude when calculating how much calcium is in bone
Replies
8
Views
2K
Determine fine-structure constant
Replies
9
Views
2K
How Does Dimensionality Affect Phonon Polarizations?
Replies
1
Views
945
Archived Time estimation - mass spectrometer
Replies
1
Views
2K

Hot Threads

Recent Insights

Back
Top