5 ms·
Can’t we just use some form of ultrasonic wave from one end and detect at other end ?
by iamgopal 4y ago
Can’t we just use some form of ultrasonic wave from one end and detect at other end ?
- wincy 4y agoI’d imagine the amount of energy you’d have to push into the water would be insane to hear it 1500 miles away, wouldn’t it?
- naavis 4y agoWhale noises travel thousands of kilometers underwater. https://en.wikipedia.org/wiki/Whale_vocalization https://en.wikipedia.org/wiki/Whale_vocalization
- totalZero 4y agoThere's an inverse relationship between wavelength and range, and the higher the frequency the better the resolution. https://acousticstoday.org/wavelength https://acousticstoday.org/wavelength
- alanbernstein 4y agoWhat other end?
- BurningFrog 4y agoPour in some traceable mix of chemicals, and see if it turns up somewhere.
- tuatoru 4y agoThere're these fish called the Devil's Hole Pupfish. Can't do that.
- BurningFrog 4y agoThere is a near infinite number of non toxic chemicals to choose from.
- tuatoru 4y agoAh, but can you show that they're not toxic to Devil's Hole Pupfish? And the population is tiny and fragile--you're not allowed any test subjects.
- BurningFrog 4y agoThere might well be 5 separate regulations forbidding it. That's a different question. The safest class of substances I can think of are unusual isotopes. They're chemically identical to the regular elements, which is what matters for life forms, but can be detected by scientific instruments.
- MichaelCollins 4y agoYou'd deafen the poor troglobites.