magnetism,electromagnetism and electromagnetic radiation
The concepts of magnetism, electromagnetism, and electromagnetic radiation are interconnected through various physical laws and theories. Magnetic states of matter include diamagnetic, paramagnetic, and ferromagnetic substances, each with its own susceptibility to magnetic fields.
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
