When people look through a telescope, air currents in the earth’s atmosphere can distort the images they see. in the 1950s, a scientist named h. w. babcock thought of a way to reduce this distortion by using a special device within the telescope. however, this device was not used until the 1990s.

which best explains why babcock’s idea took many years to become a reality?
scientists started using electron microscopes instead.
scientific telescopes were already using advanced technology.
scientific ideas often have to wait until advancements in technology make the ideas possible.
scientists often feel their ideas place an unnecessary burden on the research to develop telescopes.
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Scientific ideas often have to wait until advancements in technology make the ideas possible.

In the early, 1950's Dr. Babcock developed a plan of an instrument that could be used to observe  distant stars and galaxies. But because of lack of financing, the system was developed after 20 years in 1990's. This technology was supported with high powered lens by Department of Defense in Washington. The necessity of instrument came into observation and led to the development. Therefore, science ideas often have to wait until advancements in technology make the ideas possible.

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a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.