Which has the shorter wavelengths, ultraviolet or infrared? Which has the higher frequencies?

Q: A man’s eyes 2.5 m above sea level can barely see the top of a lighthouse which is at a certain…

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Q: What does, "Millions of drops of water suspended in the sky. " mean?

A: Here, we have to tell the meaning of the statement : "Millions of drops of water suspended in the…

Q: How does the frequency of a particular spectral line observed in sunlight compare with the frequency…

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Q: Rank the following parts of the electromagnetic spectrum from lowest to highest energy. (IR =…

A: The order of the elwctromagnetic spectrem on the basis of wavelength is  Gamma rays< xrays<…

Q: of illumination emitted by the sun at the greatest wavelength λmax = 0.5 pm and the greatest…

A: Given values:- Amount of illumination emitted at the greatest wavelength,(λmax)=0.5 pm -----(1)…

Q: Do Earth and Moon always cast shadows?

A: The earth and moon always cast shadows. We cannot see their shadow because we don’t have a screen to…

Q: How does radio waves are produced

A: Introduction: The radio wave is a type of electromagnetic radiation which produce due to…

Q: A rock salt prism is used instead of glass prism to obtain the infrared spectrum?

A: The infrared spectrum will be absorbed by a glass prism. Hence, we cannot see the infrared spectrum…

Q: When would an infrared telescope most likely be used?

A: An infrared telescope will detect and resolve the infrared rays. Since the wavelength of the…

Q: In addition to the formation of shadows and eclipses,  what other phenomena prove the rectilinear…

A: Formation of shadows is due to phenomena of rectilinear propagation of light . Shadows are created…

Q: What is the lowest energy form of radiation in the electromagnetic spectrum?

A: The energy of an electromagnetic wave is directly proportional to the frequency of the wave.   Gamma…

Q: Why do you think that ultraviolet radiation causes a suntan whereas infrared radiation dies not?

A: The ultraviolet rays are damaging because they can cause damage to skin cells. It can cause…

Q: An aurora borealis (similar to the northern lights) takes place in the upper atmosphere of the polar…

A: Gases 2 and 3 are present in this aurora.

Q: Define Ultraviolet Waves And Give Some Examples Of It

A: Ultraviolet waves are electromagnetic waves whose wavelengths fall under the ultraviolet spectrum.…

Q: Choose the BEST answer to the following: The color of light most intense in the solar radiation…

A: Solar radiation is electromagnetic radiation ranging from about 0.25 to 0.45 micro meters in…

Q: What gives rise to spectral lines? What is happening within an atom that causes it to emite light in…

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Q: The 21-centimeter line of hydrogen is in the

A: We have to find in which part of spectrum, the 21-cantimeter line of hydrogen is situated.

Q: Suppose you are standing such that a 32-foot tree is directly between you and the sun. If you are…

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Q: Solar Zenith Angle at Nordlysstasjonen 60 Daylight 80 100 Evening/Nighttime 120 100 200 300 Day of…

A: The Earth progresses through its seasons because its north-south axis has a 23.5-degree tilt. During…

Q: How would you suggest measuring the temperature of (a) the Sun (b) the Earth’s upper atmosphere, (c)…

A: Hi, you have submitted multiple subpart questions and it is not specified which parts you need help…

Q: Divide: (9.6×108) (2x10-15) 4.8x107 O 4.8×10-7 -4.8x107 O 4.8x10-7

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Q: Give a complete description of these three categories of energy relative to each other in terms of…

A: The electromagnetic spectrum is comprised of different types of electromagnetic radiation, which…

Q: What is radiation spectrum?

A: The entire range of electromagnetic radiation, including  radio waves, microwaves, infrared…

Q: Where is Kitt Peak National Observatory located?

A: Kitt peak National observatory is located in the Quinlan Mountain of the Sonoran Desert, its total…

Q: What makes stars shine?

A: The stars are made up of gas of cloud and dust which come together due to gravity. Inside the core…

Q: Which of the following explain why far infrared astronomy must be done from high-flying aircraft?…

A: Far infrared astronomy is a branch of astronomy which deals with the objects that are visible in…

Q: Which of the following is an advantage of radar reconnaissance over photoreconnaissance?     radar…

A: Radar reconnaissance can be used to identify target in day and night, through fog and cloud and…

Q: Why is micro wave and radio wave radiation dangerous for us?

A: Microwave radiation is capable of heating the body tissue in the same way it is capable of heating…

Q: Why the colour of the sky is blue?

A: When sunlight passes through the atmosphere, the fine particles in the air scatter the blue color…

Q: What is the shape of the wavefront on earth for sunlight?

A: The shape of the wave front on Earth for sunlight is spherical wave front.

Q: What is the frequency, in MHz, of a radio wave with a wavelength of 20 m?

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Q: Which part of the EM spectrum is used to transmit signals to and from satellites?

A: The part of EM spectrum that has maximum frequency are microwaves. Microwaves are produced by the…

Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.