Explain how interferometry works
What will be an ideal response?
Interferometry is a technique of connecting multiple telescopes together to work, in a sense, as if they comprised a single very large telescope. In an interferometer, light from the separate telescopes is brought together and combined carefully. By using this technique, astronomers have been able to achieve very high resolution.
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A spherical hot air balloon of diameter 20. meters just floats (hovers) when the hot air inside has been heated to a density of 1.00 kg/m3
What is the weight of the balloon and cargo (not including the air inside) if the surrounding air has a density of 1.30 kg/m3?
The acceleration of the Universe depends on the effect of ____
a. baryonic matter being greater than the effects of dark matter and dark energy b. baryonic matter and dark energy being greater than the effect of dark matter. c. dark matter and dark energy being greater than the effect of baryonic matter. d. baryonic matter and dark matter being greater than the effect of dark energy. e. dark matter being greater than the effect of dark energy.
What was the main difference between the time capsules carried on the Pioneer probes and the time capsules carried on the Voyager probes?
A) no difference, the time capsules were identical B) the time capsule on Voyager contained a record with video and audio messages C) the time capsule on Pioneer contained a record with video and audio messages D) the time capsule on Voyager contained video, but no audio
A hot pizza contains
a. heat b. internal energy c. temperature d. work e. none of the above