magnetism,electromagnetism and electromagnetic radiation

Ver más

Year 8

por peter hill

Force

por Bryan tan

Types of forces

por jie shin lin

Forces

por Rehan Juniour

magnetism,electromagnetism and electromagnetic radiation

Main topic

Oersted's experiment

interaction between electons's magnetic field is created by moving electons

F = qvB

moving charged particle induces magnetic field perpedicular to its motion

electromagnetism

motionless electrons

magnetic field

electric field

Albert Einstein's relativity equation

E = mc squared

conversion of energy into matter

Maxwell's wave equations

V = f times wavelength

electromagnetic photons are determined by kinetic energy lost

oscillating electric and magnetic fields cause wave's at 90 degrees

photons speed up/slow down and have origin and termination

electromagnetic radiation

a charge in motion geterates magnetic field

a resting electric charge radiates an electric field

Plank's Quantum Theory

E = hf = hc / wavelength

electromagnetic radiation interacts with particle/wave

magnetic fields

solenoid

B = F / Idl

imaginary lines of magnetic induction

B = F / p

magnetic domains

magnetism

aligned

no magnetism

randomly oriented

magnetic states of matter

diagmagnetic

susceptibility <1

repelled by magnet

unaffected by magnet

paramagnetic

susceptibility 0-1

very weakly magnetized

ferromagnetic

susceptibility >1

easily magnetized

laws of magnetism

magnetic induction

magnetic permeability

attract/repel

dipoles

south pole

north pole

magnetic forces

Lorentzian force

total force of moving electrons

F = qE + qvB

Faraday's Law

applies voltage to magnetic field and direction of electron flow

V = -dB / dt

Gauss's Law

F = kpP / d squared