The Spectral Classification of Stars Started with the Amount of Hydrogen

question 43

True/False

The spectral classification of stars started with the amount of hydrogen present in their spectra, but a better method now uses the amount of oxygen in the star's spectra.

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Definitions:

Bundle

A collection of goods or services sold as a single package, often at a discounted price compared to purchasing each item separately.

Revealed Preferred

A concept in microeconomic theory suggesting that consumers' preferences can be determined by observing their choices and behaviors in various situations.

Commodity Bundle

A set of goods or services that are considered together, often used in the context of consumer choice and budget constraints.

Prices

The amount of money required to purchase a good, service, or asset.