8 Questions
Spectral lines are shifted towards the____ end of the spectrum as the host star moves towards earth.
Blue
Who was the first to introduced in rigveda in 1920's (formaly in 1930)?
Albert einstein
The universe expands and collapses_______
Cyclically
The big bang is the _____
Expansion state
Collapse is also known as the
Big crunch
Matter is constantly created as the universe expands
steady-state cosmology
Matter dilutes as the universe expands
Big bang cosmology
Proposed in the modern period by Fred Hoyle, Thomas gold and Herman Bondi.
True
Study Notes
Redshift and Blueshift
- Spectral lines are shifted towards the blue end of the spectrum as the host star moves towards Earth.
Origins of the Big Bang Theory
- The Rigveda, an ancient Indian Vedic Sanskrit text, introduced the concept of the universe's cyclical expansion and contraction in the 1920s (formally in 1930).
The Cycles of the Universe
- The universe expands and collapses eternally.
- The Big Bang is the rapid expansion of the universe from a highly dense state.
The Steady State Theory
- Collapse is also known as the contraction phase of the universe's cycles.
- The Steady State Theory proposes that matter is constantly created as the universe expands to maintain a constant density.
- Matter dilutes as the universe expands, leading to the creation of new matter.
- The Steady State Theory was proposed in the modern period by Fred Hoyle, Thomas Gold, and Herman Bondi.
Test your knowledge on how spectral lines are shifted towards a specific end of the spectrum due to the Doppler effect when the host star moves towards Earth. Explore the fascinating world of astronomy and spectroscopy with this quiz!
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