From an Observational Standpoint,what Is a Pulsar

question 107

Multiple Choice

From an observational standpoint,what is a pulsar?

• A)a star that slowly changes its brightness,getting dimmer and then brighter with a period of anywhere from a few hours to a few weeks
• B)an object that emits flashes of light several times per second or more,with near perfect regularity
• C)an object that emits random "pulses" of light that sometimes occur only a fraction of a second apart and other times stop for several days at a time
• D)a star that changes color rapidly,from blue to red and back again
• E)a star that rapidly changes size as it moves off the main sequence

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Definitions:

M.B.A.s

Master of Business Administration; a graduate degree focusing on business administration and investment management.

Economics

The social science that studies how individuals, governments, firms, and nations make choices on allocating resources to satisfy their wants and needs.

Sociology

The study of the development, structure, and functioning of human society, including the analysis of social relationships and institutions.

Time

The continuous, irreversible progress of existence and events in the past, present, and future regarded as a whole.