Infrared waves are used in night vision equipment. These waves, with wavelengths longer than visible light but shorter than microwaves, detect thermal radiation emitted by objects. This capability allows night vision devices to create images in low-light or darkness, crucial ...
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The frequency or intensity of the whistle of an approaching train increases due to the Doppler Effect. This phenomenon occurs because as the train moves towards an observer, the sound waves it emits are compressed, resulting in a higher frequency ...
Doppler effect is related to sound. It describes the change in frequency of sound waves due to relative motion between the source and observer. Approaching objects increase the frequency (higher pitch), while receding objects decrease it (lower pitch), affecting how ...
The fluctuations in the frequency of a sound source are called the Doppler effect. This phenomenon occurs when there is relative motion between the sound source and the observer, causing the observed frequency to increase as they approach each other ...
When we hear people talking in the same room without seeing them, it is due to diffraction. Sound waves bend around obstacles and spread out after passing through openings, allowing us to hear voices even when the source is not ...
Silent zones where ships do not hear lighthouse sirens are created due to interference. When sound waves from the siren meet at points where they are out of phase, destructive interference occurs, canceling the sound waves and resulting in areas ...
When two loudspeakers are played simultaneously and a listener at a particular place cannot hear the sound, the reason is interference. Specifically, destructive interference occurs when sound waves from the speakers meet out of phase, canceling each other out and ...
Tuning a radio station is an example of resonance. By turning the knob, the radio’s circuit is adjusted to resonate at the specific frequency of the desired station. This resonance amplifies the signal from that station, allowing clear reception of ...
The special sound heard as a jug fills with water is due to resonance. As water fills the jug, the air column’s length inside changes, altering its natural frequency. When the air column’s frequency matches the filling water’s sound waves, ...
If Tansen’s singing could break window panes or glass glasses, it would be due to resonance. The sound waves from his voice would match the natural frequency of the glass, causing it to vibrate intensely. This amplification of vibrations could ...