Why is the primordial background radiation visible in all directions?

What will be an ideal response?


According to the inflationary universe hypothesis, the entire observable Universe was only about 10^–59 light-second across at an age of about 10^–36 second, there would have been enough time to equalize temperatures before inflation. This explains why the background radiation now has the same temperature in all directions.

Physics & Space Science

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The deviation from the way a compass needle points from the true north direction is the

a. greenhouse effect b. magnetic inclination c. magnetic declination d. magnetic resonance effect e. none of the above

Physics & Space Science

Which of the following is about as cheap as coal for base-load electric power today?

A) photovoltaic cells B) solar-thermal generation of electricity C) wind turbines D) All of the above. E) None of the above.

Physics & Space Science

How much energy is stored in the 50-?F capacitor when Va ? Vb = 22V?



a.
0.78 mJ

b.
0.58 mJ

c.
0.68 mJ

d.
0.48 mJ

e.
0.22 mJ

Physics & Space Science

The formation of a galactic central bulge is believed to ____

a. be a slow steady process lasting billions of years b. start after the formation of spiral arms c. be a violent process which adds mass to the central black hole d. begin when the central black hole has reached mature size e. continue throughout the galaxy's life body

Physics & Space Science