Search results

ye your right, when the x-ray penetrated through the crystal lattice it scattered in all directions, these rays will then interfere constructively and destructively (diffraction) resulting in a maximum or minimum respectively. The Braggs then analysed the distance between adjacent maximums to...

lol nice memory

nice answer, just addtional stuff --> he applied mathematical analysis to determine relationships between spacing of cryustal planes, angles of reflection and the wavelengths of radiation. they key impact as you said is the doping and the regular spacing

Do we need to know some metals/alloys/ceramic that exhibit superconducting properties and their critical temperatures? or in a question do they give this info to us?

you didnt need to count turns, they will cancel out as you use both formulas,

c?

Question: How did the Braggs determine the crystal structure of a lattice? and what impact did it have on the scientific understanding of metal lattices (4marks)

Ye the egg carton one works nice or marbles in a preti dish, you have to talk about movement of holes and electrons as well as how this was simulated in your experiment including a diagram, relating this back to semiconductors to get 5marks.

Question: In your studies at school, you have performed an investigation to model the behaviour of semiconductors, outline this experiment (5marks)

Prior to 1947, the invention of the world's first transistor, a big problem in communication technology was amplification, the received signals were extremely weak and could not produce a loud sound without being amplified. Another problem was the short comings with valves (unreliable, high...

Question: Outline how transmisson lines are insulated from supporting structures and protected from lightning strikes (4marks) Question: Explain the role of transformers in electricity substations (4marks)

yeh make sure you draw them clear (this means that it should take up a significant size), you can always ask for extra booklets to write more after drawing your diagram

Question: Discuss advantages and disadvantages of AC and DC generators and relate these to their uses

@Kim, superconducting properties will exist at any temperature at or below Tc- so for both circumstances Meissner effect will occur. Not sure what you mean by perfect eddy currents

Sounds like your set =D, the rest factor will benefit you more then

LMAO u have exactly the same plan as me although ima get on to past papers, im up for all nighter, lets keep this thread alive to at least 2 =D

Great thanks

This is how they operate right? confirmation pls

nice 6! Question: Explain how the motor effect is utilised in loud speakers (4marks)

I thought the whole point behind meisner effect was the expulsion of a magnetic field from within a superconducting matrerial Anyways Question: Discuss two possible applications of superconductors in relation to computers, generators, motors, transmission of electricity (6marks)