If the Rest Wavelength of a Certain Line Is 600

question 22

Multiple Choice

If the rest wavelength of a certain line is 600 nm, but we observe it at 594 nm, then

• A) the source is getting 1% hotter as we watch.
• B) the source is approaching us at 0.1% of the speed of light.
• C) the source is receding from us at 10% of the speed of light.
• D) the source is approaching us at 1% of the speed of light.
• E) the source is spinning very rapidly, at 1% of the speed of light.

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Definitions:

Angel

A wealthy person who funds a new business, typically in return for convertible debt or a share in the company's equity.

Pre-money Valuation

The value of a company as estimated before the injection of new capital or investments.

Post-money Valuation

Refers to a company's valuation after external financing and/or capital injections are added to its balance sheet.

Outside Investment

Funds acquired from external sources, such as venture capitalists or angel investors, to finance the operations or growth of a business.