About What Was the Temperature of the Universe When a Typical

question 25

Multiple Choice

About what was the temperature of the universe when a typical cosmic microwave background radiation photon was no longer able spontaneously to create an electron and positron pair?

• A) 1000 K
• B) 100,000 K
• C) 1 million K
• D) 1 billion K

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Definitions:

PC

Stands for Personal Computer, a multi-purpose electronic computing device designed for individual use, typically consisting of a central processing unit, memory, and input/output features.

RAM

Random Access Memory, a type of computer memory that can be accessed randomly, any byte of memory can be accessed without touching the preceding bytes.

Temporary

Pertaining to a limited period of time, not permanent.

Volatile

Referring to substances that easily evaporate at normal temperatures or, in financial markets, to investments subject to rapid and unpredictable changes in value.