Posted on 04/01/2022 3:42:11 PM PDT by algore
There are two speeds of sound on Mars — one for high-pitched noises like the zap of a laser and another for lower frequencies like the whir of a helicopter rotor, scientists have revealed.
The first audio recordings on the Red Planet were obtained by NASA's Perseverance rover after it landed in February last year and deployed its two microphones.
Experts have now given their first analysis of five hours of sound picked up by the rover, which revealed a quiet planet with occasional gusts of wind where two different speeds of sound would have a strange delayed effect on hearing.
The findings suggest that trying to talk in the Red Planet's atmosphere might produce a weird effect, since the higher-pitched sound seems to travel faster than bass notes.
The study confirmed for the first time that the speed of sound is slower on Mars, travelling at 787 feet per second (240 metres per second), compared to Earth's 1,115 feet per second (340 metres per second).
This had been expected because Mars' atmosphere is 95 per cent carbon dioxide – compared to Earth's 0.04 per cent – and is about 100 times thinner, making sound 20 decibels weaker.
But the scientists were surprised when the sound made by the laser took 250 metres a second — 10 metres faster than expected.
'I panicked a little,' Maurice said. 'I told myself that one of the two measurements was wrong because on Earth you only have one speed of sound.'
(Excerpt) Read more at dailymail.co.uk ...
Could be. Or, starting to prep us for fake mars helicopter.
So, you’re saying the sound on Mars is
Binary. Ok.
Sounds like a delightful place to live. 🤣
Separate but equal, and on April 1 only.
I would have thought it would be much hotter on Mars, what with all that nasty CO2…
The speed of sound varies on Earth according to altitude and temp, if memory serves...
Speed of sound is variable on Earth as well, depending on altitude.
The plans called for (among other things) "low vibration aluminum tubing" to be used in constructing the device, which was a giveaway that it was a goof.
Indeed it does
It could be the two conflicting atmospheres, the natural one and the artificial one. The Barsoomians had to shut down the atmosphere factories, cover up the canals and move underground when humans invented telescopes.
Speed of sound on Earth in feet per second is “49 times the square root of temperature in degrees Rankine”.
Binary as in , male sound and female sound.
Maybe the air density is a lot higher very close to the surface.
Yes, it depends on both.
There’s a phenomenon in superfluid helium called “second sound,” which is sound the speed of heat flow in the superfluid. The speed of sound and the speed of heat transfer in the superfluid phase are almost the same.
because on Earth you only have one speed of sound.
++++++++++++++++++++++++++++++++++
Maybe you do. No one else does.
There are two speeds (velocity) of light.
One speed nearer a gravitational mass, the other not near a gravational mass.
I did stay at a Holiday Inn once.
5.56mm
Now this is exactly the kind of crucial scientific info we need for our billions of investment dollars!
A new answer on Jeopardy!
There are only two atmospheric temperatures and they exist simultaneously. Uh huh.
Speed of sound is 1200 feet per second at sea level. I went to school to learn that.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.