1.5 Expanding Universe Flashcards
What is Red Shift
Stars And Galaxies Moving Away from us.
What happens to the frequency and Wave Length during Redshifts
Frequency Reduces, Wave Length increases
What is BlueShift
Stars And Galaxies Moving Towards Us.
What happens to the frequency and Wave Length during Blueshifts
Frequency Increases, Wave Length Decreases
The equation for Red Shift
Z = λObserved - λRest
————————–
λRest
What is Dark Energy
A mysterious energy field present across the entire known Universe, which accounts for 70% of the universe.
What does Dark Energy Show
The Expansion of the Universe
What is the Big Bang
An event at the beginning of the universe where space-time expanded from a singular point .
Proof of the Big Bang
Stellar temperatures and CMBR
Olbers paradox
Abundance of Helium and Hydrogen
What is the Doppler Effect
When Frequency is perceived due to relative
motion.
Equation For Doppler Effect
fₒ = fₛ( v )
ㅤㅤㅤ———–
ㅤㅤㅤV +/- Vₛ
Siren Moving Towards Observer
Frequency Greater
Siren Moving Away from Observer
Frequency Smaller
What do stars emit
Radiation over the complete electromagnetic spectrum
