| 词汇 | 声波 |
| 释义 | 声波 An acoustic detector, also in the armband, then calculates which part of the display you want to activate. But now researchers have sped single electrons straight to their destinations using sound. When acoustic waves cause the fibre to vibrate, it produces a corresponding electrical signal that can be detected. The parts of Earth shaded by the moon naturally cool down, and this temperature difference spawns the acoustic waves, researchers said. Torpedoes can still be tricked, in many cases, with decoys that emit sound waves to mimic ships. The cochlea in the ear converts sound waves to electrical impulses that the brain processes as sound. Scientists from Korea have turned the main ingredient of calamine lotion into a tiny material that converts sound waves into electricity. Using sound waves to charge small devices like cell phones is not a brand new idea. Where there is sound, there must be sound waves. That’s the interference of sound waves from the forks. The Korean scientists, however, want to harness a different kind of power source: sound waves. It produces an inverted sound wave to cancel out unwanted noise in the headphone signal. It uses an A4- size piece of piezoelectric film in a T-shirt to absorb pressure from sound waves. They work by sending out pulses of high-frequency sound and then interpreting the reflections as images. To do all this, though, you need a device called a transducer. Their shape focuses the waves so that they penetrate the object being scanned. We know which brain regions handle sound waves that come in through your ears. Are the same areas active when you simply imagine the sound? Radio waves exist in nature, from sound and light to cosmic rays in space. This allows it to vibrate in sympathy with sound waves, like the diaphragm in a conventional microphone. A Coliseum called“The World of Tomorrow” introduced people to a future where homes would be equipped with solar-powered ovens, climate- controlled bedrooms, and sound waves programmed to dispel dirt. It was thought that, at frequencies this high, the rapidly cycling sound wave was too fast for the auditory nerve to cope with. There, monks gave presentations on sound waves, the origins of the universe and how the brain works. This wave pattern occurs often in nature, including ocean waves, sound waves, and light waves. This wave of excess density is sound. They then compressed and decompressed the gas, which generated sound waves. Software borrowed from submarine noise- detection technology analyzes the shape of the sound wave to determine the bullet’s precise angle. They work by sending out pulses of high-frequency sound and then interpreting the reflections as images. It is within this atmosphere that sound waves could form, grow, and move. |
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