0
Low-frequency radio waves travel easily through brick and stone and VLF even penetrates sea-water. As the frequency rises, absorption effects become more important. At microwave or higher frequencies, absorption by molecular resonance in the atmosphere (mostly water, H2O and oxygen, O2) is a major factor in radio propagation. For example, in the 58-60 GHz band, there is a major absorption peak which makes this band useless for long-distance use. This phenomenon was first discovered during radar research in World War II. Beyond around 400 GHz, the Earth's atmosphere blocks some segments of spectra while still passes some-this is true up to UV light, which is blocked by ozone, but visible light and some of the near-infrared is transmitted.
What else can I help you with?
Radio waves do what to the radio so that we may heat them?
Radio waves are electromagnetic waves that carry energy. When these waves are absorbed by the radio's antenna, they induce electrical currents in the circuitry of the radio. This process allows the radio to convert the energy from the radio waves into sound, enabling us to hear broadcasts. However, radio waves themselves do not heat; it is the conversion of that energy into electrical signals that allows the radio to function.
What characteristic of radio waves makes them useful for determining the shape of the galaxies?
Radio waves can penetrate interstellar gas and dust without being scattered or absorbed
What characteristic of radio waves makes them useful for determining the shape of a galaxy?
Radio waves can penetrate interstellar gas and dust without being scattered or absorbed
What characteristics of radio waves makes them useful for determining the shape of a galaxy?
Radio waves can penetrate interstellar gas and dust without being scattered or absorbed
Do radio waves continue into space indefinetly?
Yes, just as all other electromagnetic waves do. They continue until they're absorbed by something.
Radio waves do what to the radio so that we may heat them?
Radio waves are electromagnetic waves that carry energy. When these waves are absorbed by the radio's antenna, they induce electrical currents in the circuitry of the radio. This process allows the radio to convert the energy from the radio waves into sound, enabling us to hear broadcasts. However, radio waves themselves do not heat; it is the conversion of that energy into electrical signals that allows the radio to function.
What characteristic of radio waves makes them useful for determining the shape of the galaxies?
Radio waves can penetrate interstellar gas and dust without being scattered or absorbed
What characteristic of radio waves makes them useful for determining the shape of a galaxy?
Radio waves can penetrate interstellar gas and dust without being scattered or absorbed
What characteristics of radio waves makes them useful for determining the shape of a galaxy?
Radio waves can penetrate interstellar gas and dust without being scattered or absorbed
What layer of atmosphere is radio waves?
the lonosphere
What is an electromagnetic wave spectrum that our atmosphere doesn't absorb?
Radio waves aren't absorbed by the atmosphere.
Do radio waves continue into space indefinetly?
Yes, just as all other electromagnetic waves do. They continue until they're absorbed by something.
Can radio waves pass through wood?
Yes, radio waves can pass through wood, although they may be weakened or absorbed depending on the density and thickness of the wood. This is because wood is mostly made up of non-metallic materials that are generally transparent to radio waves.
Why do hospitals use x rays instead of radio waves for looking in peoples bodies?
Radio waves (along with magnetism) are used for that purpose instead of x-rays in MRI machines. x-rays are absorbed by the body differently than radio waves, so it depends on what in the body is being looked at.
What are some types of materials that absorb radio waves and how do they affect the transmission of radio signals?
Materials such as metals, water, and certain types of building materials like concrete can absorb radio waves. When radio waves encounter these materials, they can be partially or completely absorbed, leading to signal loss or interference. This absorption can weaken the strength of the radio signal and reduce the range over which it can be transmitted effectively.
Can radio waves be deflected?
Of course. That's how they reach the radio in your basement. Radio waves do all the same kinds of twisting, turning, bending, bouncing, and spreading contortions that light waves do.
What kind of material can radio waves penetrate that light waves cannot?
Radio waves can penetrate materials such as walls, buildings, and certain types of soil more effectively than light waves. This is due to their longer wavelengths, which allow them to pass through obstacles that scatter or absorb visible light. For example, radio waves can travel through concrete and wood, while light waves are typically reflected or absorbed by these materials.
