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@perawinkle:
Tavana
Open In TikTok:
Region: ID
Thursday 24 September 2026 17:29:06 GMT
516
54
1
15
Music
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No Watermark .mp4 (
0.47MB
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No Watermark(HD) .mp4 (
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Watermark .mp4 (
0.92MB
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Music .mp3
Comments
miracle :
agree
2026-09-24 22:14:33
1
To see more videos from user @perawinkle, please go to the Tikwm homepage.
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The Doppler effect is the change in the frequency of a wave that an observer detects when the source of the wave and the observer are moving relative to each other. A familiar example is a passing ambulance: as it approaches you, the siren sounds higher-pitched, and after it passes, the pitch suddenly becomes lower. The siren itself is not changing its actual frequency. Instead, while the ambulance moves toward you, each new sound wave is emitted slightly closer to the previous one, compressing the wavefronts and decreasing their wavelength. Since wave speed in the air is approximately fixed, a shorter wavelength means a higher observed frequency. Once the ambulance moves away, the opposite happens. Each successive wave is emitted from a position farther away from you, so the wavefronts become more spread out. This increases the wavelength and therefore lowers the frequency you hear. The faster the source moves relative to the observer, the stronger this shift becomes. The same basic phenomenon applies beyond sound: Doppler shifts occur with electromagnetic waves such as light and radio waves, allowing astronomers to measure the motion of stars and galaxies and technologies such as radar to estimate the speeds of moving objects. #math #physics #sound #doppler #f1
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