The Best Wavelength to Use to Observe a Solar Prominence

question 20

Multiple Choice

The best wavelength to use to observe a solar prominence or flare is

• A) 550 nm,green visible light.
• B) 656 nm,a red hydrogen emission line.
• C) 16 mm,an ultraviolet emission line.
• D) 21 cm,microwave emission.

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Definitions:

Long Run

A time period in economics during which all inputs or factors of production can be varied, and no costs are fixed.

Expenditures

Money spent on goods, services, or other expenses by individuals, businesses, or governments.

Long Run Cost Curve

A graphical representation that shows the minimum cost at which any given level of output can be produced in the long term, once all inputs are variable.

Expansion Path

A line that shows the combination of inputs that a firm will use to maximize output for any given level of total cost.