why the reflection are important for radio transmission.

Q: Why do astronauts keep to altitudes beneath the Van Allen radiation belts when doing space walks?

A: The Van Allen Radiation belts are composed of electrically charged particles of protons and…

Q: Ultraviolet bulbs have a quartz envelope instead of glass?

A:

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

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Q: During a nuclear explosion, the core of the explosion reaches temperatures of about 10,000,000 K.…

A: We know that  wiens law   λmax = b / T b = 2.897×10−3 m⋅K T = Absolute temp in  K λmax = peak wave…

Q: How does radio waves are produced

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

Q: what is the radio in simplest form

A: Electromagnetic spectrum consists of all the ranges of electromagnetic radiation. Radio waves have…

Q: How are Ultraviolet waves produced?

A: Ultraviolet radiation is generated naturally from the Sun and artificial sources such as…

Q: why the diffraction are important for radio transmission

A:

Q: It is necessary to use satellites for long distance TV transmission. Why?

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Q: Why are the convection and the radiation resistances at a surface in parallel instead of being in…

A: As the heat transfer occurs simultaneously for convection and radiation process, the convection and…

Q: How is a radio wave transmitted?

A:

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: The nearest star beyond the Sun is Alpha Centauri, 4.2 × 1016 m away. If we were to receive a radio…

A: Given:  Distance, d = 4.2 x 1016 m  speed of light,, c = 3 x 108 m/s

Q: What is the Doppler shift in the wavelength of Hα ( 656.1 nm ) line from a star which is moving away…

A:

Q: Do higher energy gamma rays travel faster, slower, or at the same speed in space than lower energy…

A: The higher energy gamma rays and lower energy radio waves , both are part of same electromagnetic…

Q: Why will an infrared photon have less energy than an ultraviolet photon?

A: "Since all questions are different as per bartleby guideline we can author only first one please…

Q: Infrared radiation from young stars can pass through the heavy dust clouds surrounding them,…

A: Speed of light = frequency × wavelength

Q: HOW HENRICH HERTZ PRODUCED RADIO PULSES OR WAVES

A:

Q: Give me a good introduction to a Spectrophotometer ??

A: Answer:-  Spectrophotometer is an instrument that measure the amount of light passing through a…

Q: What is magnetic resonance spectroscopy? What are the basic applications?

A: The study of absorption and emission of radiations from matter is known as spectroscopy. The device…

Q: Who discovered the radio waves?

A: Introduction: In the electromagnetic spectrum, several wavelengths of light are present.…

Q: Define how to determine the velocity v of P waves in various layers and the thicknesses of those…

A: Ans:- Image-1

Q: What is the most suitable means of relaible continous communication between an orbital satellite and…

A: Microwave and radio waves are the most suitable means reliable continuous communication between an…

Q: Which travels faster through a vacuum - an infrared ray or a gamma ray?

A: Infrared and gamma rays are electromagnetic waves. So they travel at 3×108m/s in vacuum.

Q: Cool hydrogen emits a radio signal at the specific wavelength of 21 cm. What is the energy…

A:

Q: What is color, and how do our eyes detect it?

A: Explanation: Newton observed that color is not native in objects. Color arise in light. Sunlight, as…

Q: Two starships, the Enterprise and the Constitution, are approaching each other head-on from a great…

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Q: What is the Doppler shift in the wavelength of Ha (656.1 nm) line from a star which is moving away…

A:

Q: What is direct transmission mode?

A: Mode of transmission in which transfer of data or something else will take place directly that is…

Q: If a species evolved in order to see white tissues of the body, which wavelength do they have…

A: We can answer the first question since the exact one is not specified. Please resubmit the question…

Q: What is the energy of an ultraviolet photon with wavelength 100 nm? What is the frequency of an…

A:

Q: Describe the Grating Spectrographs?

A: A diffraction grating is an optical element, which separates (disperses) polychromatic light into…

Q: Why do different radio stations have different radio frequencies assigned?

A: Solution: Radio stations work on different radio-wave bandwidths, which we will discuss in below to…

Q: How the low frequency signal could be transmitted through long distances?

A: Frequency: It is the number of complete cycle in a second is known as frequency. The SI unit of…

Q: True or false "Radio waves are a form of light"

A: Yes , Radio waves are a form of light waves.All waves present in the electromagnetic spectrum are a…

Q: What Do You Mean By Am Radio?

A: AM Radio is a common example of Am modulation. 550 to 1720kHz will be the frequency band of AM…

Q: List the three sub-divisions of infra-red (IR) radiation and state their ranges.

A:

Q: Why is diamagnetism, in contrast, almost independent of temperature?

A: The residual magnetic behavior of a material when these are neither ferromagnetic nor paramagnetic…

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…