What Was the Temperature of the Universe When the Recombination

question 10

Multiple Choice

What was the temperature of the universe when the recombination took place that produced the cosmic background radiation we observe today?

• A) about 2.7 K
• B) about 300 K
• C) about 3000 K
• D) about 3 million K
• E) about 3 billion K

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Definitions:

Moon Illusion

A perceptual phenomenon in which the Moon appears larger near the horizon than it does while higher up in the sky.

Perceptual Constancy

This is the psychological phenomenon where our perception of objects remains unchanged despite variations in their appearance to our eyes, like changes in size, shape, or color.

Feature Detectors

Neurons in the brain that specialize in responding to specific features of an environment or stimulus, such as edges, angles, or movements, contributing to the perception of objects and patterns.

Visual Cortex

The part of the cerebral cortex responsible for processing visual information, located in the occipital lobe.