In the context of an eclipsing binary system, briefly explain a light curve
What will be an ideal response?
In an eclipsing binary system, if the plane of the orbits is nearly edge-on to Earth, then the stars can cross in front of each other as seen from Earth. When one star moves in front of the other, it blocks some of the light, and the star is eclipsed. Such a system is called an eclipsing binary system. Seen from Earth, the two stars are not visible separately. The system looks like a single point of light. But, when one star moves in front of the other star, part of the light is blocked, and the total brightness of the point of light decreases. A light curve is a graph of brightness versus time commonly used in analyzing variable stars and eclipsing binaries.The light curves of eclipsing binary systems contain plenty of information about the stars, but the curves can be difficult to analyze. A light curve shows how long it takes for the stars to cross in front of each other, and multiplying these time intervals by the orbital speeds gives the diameters of the stars. There are complications due to the inclination and eccentricity of orbits, but often these effects can be taken into account, so observations of an eclipsing binary system can directly tell you not only the masses of its stars but also their diameters.
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What is postulated to have caused a sudden inflation of the early universe?
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The proper abbreviation for ‘seconds' is ‘sec.'
a. True b. False Indicate whether the statement is true or false
A laser beam is incident from the air at an angle of 30.00° to the vertical onto a solution of Karo syrup in water. If the beam is refracted to 19.24° to the vertical, what is the index of refraction of the syrup solution?