What Temperature Is Needed by a White Dwarf to Ionize

question 61

Multiple Choice

What temperature is needed by a white dwarf to ionize surrounding gas and create a planetary nebula?

• A) 500 K
• B) 2000 K
• C) 25,000 K
• D) 100,000 K
• E) 500,000 K

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Definitions:

Retina

A light-sensitive layer at the back of the eye responsible for capturing images and converting them into electrical signals for the brain to interpret.

Visual Receptors

Specialized cells located in the retina that convert light into neural signals enabling vision.

Retina

A membrane located at the rear of the eyeball made up of light-sensitive cells that initiate nerve signals, which are transmitted through the optic nerve to the brain to create a visual perception.

Cones

Photoreceptor cells in the retina that function in color vision and are responsible for high spatial acuity.