How has the Doppler effect and the redshift of stars and galaxies indicated that the universe is expanding?

Biology

2 answers:

kiruha [24]3 years ago

4 0

Answer:

The effect of red shifting in wavelength is continuously increasing which depicts the expansion of universe.

Explanation:

In Doppler shift there occurs an apparent change in the wavelength of the light emitted by star

For example – If a star is near to earth, the light emitted by it would be shorter in wavelength while a star far away from earth will emit a light that has a longer wavelength.

Thus a shorter wavelength light is shifted towards the end of spectrum which is blue while a longer wavelength light shifts towards the red end of spectrum (known as redshift)

The farther the star from earth , the more it is red shifted . The red shift effect is continuously increasing.

Hence, both Doppler and redshift affect depicts that universe is continuously expanding.

sertanlavr [38]3 years ago

3 0

The could tell by solar radiation and dark matter, they didnt know were dark matter was but they new it was there

You might be interested in

In humans, the inheritance of what is best explained as being codominant

ArbitrLikvidat [17]

Answer:

height

Explanation:

7 0

2 years ago

The water temperature process in which is forced into the air is called

notsponge [240]

The answer Is B good Luck

8 0

3 years ago

The study of early development of organisms is called

inysia [295]

The study of early development of organisms is called embryology.

hope this helped, please mark brainliest :)

8 0

2 years ago

What are the differences between hypothesis , theory, and law?

Blababa [14]

Hypothesis is what you think will happen before the experiment, it isn't necessarily backed up by any sources or evidence. A scientific law is the observation of a phenomenon and a theory is the explanation both can be used together to back each other up.

3 0

3 years ago

A client is admitted to the hospital with elevated temperature, chills, cough, and fatigue. The health care provider orders a ch

Mkey [24]

Answer:

Broad-spectrum antibiotics can cause antibiotic resistance.

Explanation:

Antibiotics are the substances that inhibit the growth of or kill the bacteria and hence, these are used as medications for the treatment of a lot of bacterial diseases.
These antibiotics can either be of broad-spectrum or the narrow spectrum.
The broad-spectrum antibiotics are the ones that are effective against a variety of bacteria, both gram-positive and negative whereas the narrow-spectrum antibiotics are the ones that target only a specific type of bacteria.
Since the bacteria can mutate very fast and hence, develop antibiotic resistance, the doctors usually avoid prescribing broad-spectrum antibiotics and only use them when the causal bacteria is completely unknown.
Hence, in the given case the provider prescribes separate medications for both types of bacteria.

5 0

3 years ago