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7bear
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In other medium except vacuum, there is different speed in different EM wave, right?
i.e. speed of radio wave is faster than speed of gamma wave, right?
i.e. speed of radio wave is faster than speed of gamma wave, right?
7bear said:In other medium except vacuum, there is different speed in different EM wave, right?
i.e. speed of radio wave is faster than speed of gamma wave, right?
hemmul said:However at some frequency range there exists also anomalous dispersion (if during the normal dispersion the refraction index is decreasing with the increase of the frequency - in the anomal case it is increasing)
So Integral's answer "No" is also applicable ;)
ZapperZ said:I can also talk about materials with negative index of refraction, 1 and 2D materials with no well-defined quasiparticles that produce nowhere near the Drude peaks expected in conventional optical conductivity, etc.. etc.
Zz.
ZapperZ said:I can also talk about materials with negative index of refraction
hemmul said:Sure, but that won't produce any new answers (besides "Yes" and "No") to the original 7bear's question ;)
Mariko said:as far as speed all electromagnetic waves move at the same speed period
jdavel said:Really? Ever seen a rainbow?
Mariko said:Yes I have and but what does a rainbow have to do with the speed at which a elecctromagnetic wave moves?
The speed of a wave refers to how fast it travels through a medium. The speed of a radio wave is slower than the speed of a gamma wave. Radio waves travel at the speed of light, which is about 299,792,458 meters per second. Gamma waves, on the other hand, travel at the speed of light squared, which is about 899,875,517,873,681 meters per second.
The speed of a wave is determined by the properties of the medium it travels through. Radio waves travel through air, which has a lower refractive index compared to the vacuum that gamma waves travel through. This means that radio waves are slowed down as they pass through the air, while gamma waves are not affected by the vacuum.
No, the speed of a wave is determined by the properties of the medium it travels through. Since gamma waves travel through a vacuum, which has the lowest possible refractive index, their speed cannot be exceeded by any other type of wave.
The difference in speed between radio waves and gamma waves has significant practical implications. For example, radio waves are used for communication because they can travel long distances through the atmosphere, while gamma waves are used in medical treatments because of their ability to penetrate through tissues. Understanding the speed difference allows us to use each type of wave for its specific purpose.
The speed of a wave can be measured by calculating the wavelength and frequency of the wave. In the case of radio waves and gamma waves, their speed is also determined by the properties of the medium they travel through. Scientists use precise instruments and mathematical formulas to accurately measure the speed of these waves.