Stuff im getting wrong Flashcards
muon decay products?
electron + electron antineutrino + muon neutrino
Double slit - what causes interference?
path difference ∴ phase difference ∴ interference
why is interference pattern minimas not zero?
amplitude of wave decreases the further a wave travels.
waves through slit travel diff distance ∴ have diff amplitude ∴ minimas form
moments - smth is just about to tip…
there’s no support from the support bc just about to lose contact.
path difference =
ONE WAVELENGTH
well how can we conserve momentum but not Ek in inelastic collisions?
momentum is mv (v is linear) whereas Ek is 0.5mv^2 (v is squared) therefore direction of v isn’t relevant in ek. so for example they can be moving in oppo directions so mv subtract.
Ek can be lost by going to sound or maybe stored in the object when it deforms etc
core is transmission medium for?
em wave (via TIR)
proof of wave nature of sound?
diffraction through door/out of a pipe
red vs blue light
the greater the refractive index the slower it travels (eg blue slower bc greater refractive index)
reduce material and modal disperison?
Use monochromatic light so speed of pulse constant.`
Use of shorter repeaters so that the pulse is reformed before
significant pulse broadening has taken place.
Use of monomode fibre to reduce multipath dispersion
acceptation of theories
method and value published
other scientists repeat experiment using same method
radioactive vs irradiation?
to become radioactive nucleus has to be affected which radiation doesn’t do.
ionising radiation only affects outer e-s not nucleus
high level waste is made solid into pyrex glass - called?
vitrified
why place in cooling ponds?
bc initially generates lots of heat
bc initially highly radioactive so needs to be screened in cooling ponds.
