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Does the sun appears reddish as it sets because the sun emits more radiation at longer wavelengths at sunset?
no
Can 2 stars have the same absolute magnitude but different radius'?
Yes. You can have a larger star that is cooler and thus emits less power per square meter, and a smaller star that is hotter, and emits more power per square meter. The total power emitted by the star is the surface area times the amount of power emitted per unit area.
Why must carbon nanotube be light?
Carbon nanotube emits light because it absorbs light across a wide range of wavelengths
Does Polaris reflect light?
Polaris (North Star or Pole Star) has an apparent magnitude of +1.97 (Variable)
What is the wave length of a 25 watt incandescent light bulb?
Since white light is emitted from an incandescent bulb, it contains all wavelengths in the visible light spectrum between 400 to 700nm. It also emits wavelengths in the infrared region.
Which is hot a blue star or a red star and why?
All stars are hot. Blue stars are the hottest. The hotter a star is, the shorter the wavelength of light it emits. Blue light has a shorter wavelengths than most other colors.
What must start in order for scientists to say that a star is born?
The critera for a "star" is that it emits radidation and some of that in the visible wavelengths.
What is the term for bightness of a star?
The brightness of a star is called its luminosity. This refers to the total amount of energy a star emits per second, taking into account its brightness across all wavelengths of light.
What color of star is considered super giant?
The difference in colors actually depends on a lot of different factors. The first is the composition of a star. While stars are all basically composed of atoms some stars have other trace elements in them that can alter the wavelengths of light that they emit. The next factor is surface temperature. This is the most significant contributor to a star's color. The change in temperature changes the wavelength of light a star emits. The last factor is distance in relation to the Doppler Effect.
Why don't we use visible-wavelength telescopes to locate neutron stars?
A neutron star emits most of its energy at higher frequencies.
How is it possible to view objects lightyears far away?
A star emits light, this light travels through empty space to Earth. Note that stars are extremely bright; stars are similar to our Sun.
I was wondering is it possible to identify an object by detecting what wavelengths of radiation it emits. For example would a ball emit radiation of wavelengths x y and z?
The wavelengths of incoming solar radiation are shorter than the wavelengths of re-radiated heat.
How do stars make radiant energy?
Thermonuclear fusion in the core of the star heats the material of the star. A series of complex energy transfer mechanisms transport the heat from the core to the photosphere of the star. The photosphere then emits electromagnetic radiation.
Does a star emit or reflect?
A star emits light. Our Sun is a star.
Does the sun appears reddish as it sets because the sun emits more radiation at longer wavelengths at sunset?
no
Which stars are brightest at ultraviolet wavelengths?
OB
How is the blue shift related to the lifecycle of a star?
Not at all. "Blue shift" refers to a shift of features in the star's spectrum toward shorter wavelengths, for stars that are moving toward us. It has nothing at all to do with the composition or properties of the star itself.
