UNIVERSE LL W/SAPLINGPLUS MULTI SEMESTER
UNIVERSE LL W/SAPLINGPLUS MULTI SEMESTER
11th Edition
ISBN: 9781319278670
Author: Freedman
Publisher: MAC HIGHER
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Chapter 5, Problem 50Q
To determine

The wavelength to which the vision of the creatures evolving on a planet orbiting around a star hotter than the Sun would be the most sensitive.

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humans can typically see light in the range of 400 to 700 nm. however, some animals can see wavelengths outside of this range. for instance bees and some spiders can see ultraviolet light, while snakes and other reptiles have vision extending to the infrared wavelengths. what adaptive advantages might this extended vision offer these animals
Infrared radiation from young stars can pass through the heavy dust clouds surrounding them, allowing astronomers here on Earth to study the earliest stages of star formation, before a star begins to emit visible light. Suppose an infrared telescope is tuned to detect infrared radiation with a frequency of 3.30 THz. Calculate the wavelength of the infrared radiation. Be sure your answer has the correct number of significant digits.
An anstonomer on a planet orbiting the star Deneb wants to differentiate the reflected light by Earth from the light of the Sun. First, consider the area of Earths disk which reflects the Sun's intercepted light. Second, consider the surface area of a sphere with the same radius as Earths orbit around the Sun. Take the ratio of these two areas. Assume the Earths radius is 6400.0 km and is 1.3 x108 km from the Sun.
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