4 ms·

A submarine itself is quite massive, and has big moving parts (e.g. the rotor). The crew has less mass, but it would be very close, and also in constant movemen

by otikik 3y ago

A submarine itself is quite massive, and has big moving parts (e.g. the rotor). The crew has less mass, but it would be very close, and also in constant movement. Wouldn’t this interfere with those measurements? Would they need to stop the engine and play “frozen TikTok” while the measurement device is active?

kryogen1c 3y ago
> big moving parts (e.g. the rotor) The shaft and screw are confined to the end of the sub. A navigation instrument like this would not be in the engineroom.
- otikik 3y ago
  It is still way closer to the instrument than the deep end of the sea, most of the time. Square of distance is a very potent thing. I am reminded of this: https://www.theguardian.com/science/2015/may/05/microwave-oven-caused-mystery-signal-plaguing-radio-telescope-for-17-years https://www.theguardian.com/science/2015/may/05/microwave-ov...
  - RobotToaster 3y ago
    Imagine spending 17 years to find the source of interference, and it's just Kyle with his chicken tenders.
JumpCrisscross 3y ago
> Wouldn’t this interfere with those measurements Towed sensors and multiple passes over known calibration zones?
samus 3y ago
Surely the influence of some of these sources of noise can be modeled and filtered out. A University of Vienna currently conducts experiments to measure the gravitational force at very small sales, and they already have to do this with things like crowds moving about the city during rush hours.
- westurner 3y ago
  Sources of Noise?! Doesn't that mean that the gravitational field is an information storage and transmission medium; a signal channel? Is it lossy? Is there a routable signal path to block harassing calls? Is it slower or cheaper than nonlocal entanglement; like quantum radar? What is the minimum energy necessary to cause a propagating thresholdable-as-binary pertubation of a gravitational field?
  - adonovan 3y ago
    It sure is a medium! One Denver (IIRC) gravitational experiment could measure the field distortion caused by 100,000 people and cars at a local sports arena. [citation needed]
    - westurner 3y ago
      Is there a butterfly effect -like minimum pertubation for gravitational wave propagation through matter or massful things, at least? Is there something that's low-enough power to not EM-burn a brainstem in a crytographically-keyed medical device with key revocation? Does a fishing lure bobber on the water produce gravitational waves as part of the n-body gravitational wave fluid field, and how separable are the source wave components with e.g. Quantum Fourier Transform/or and other methods? Butterfly effect: https://en.wikipedia.org/wiki/Butterfly_effect https://en.wikipedia.org/wiki/Butterfly_effect Chaos theory: https://en.wikipedia.org/wiki/Chaos_theory https://en.wikipedia.org/wiki/Chaos_theory Quantum chaos: https://en.wikipedia.org/wiki/Quantum_chaos https://en.wikipedia.org/wiki/Quantum_chaos Superfluid Quantum Gravity: Backscatter: https://en.wikipedia.org/wiki/Backscatter https://en.wikipedia.org/wiki/Backscatter
  - samus 3y ago
    Not a formal definition, but noise is simply the undesirable parts of the output of any information processing device, be it a sensor, an amplifier, or a transmission medium. But on Earth it's simply not practical as such. Gravitational waves observatories are used to detect events such as neutron star or black hole mergers that are otherwise unobservable, but they require an insane level of precision to be detected.
RobotToaster 3y ago
Mount it on a UUV?

by otikik 3y ago

kryogen1c 3y ago

> big moving parts (e.g. the rotor) The shaft and screw are confined to the end of the sub. A navigation instrument like this would not be in the engineroom.

otikik 3y ago
It is still way closer to the instrument than the deep end of the sea, most of the time. Square of distance is a very potent thing. I am reminded of this: https://www.theguardian.com/science/2015/may/05/microwave-oven-caused-mystery-signal-plaguing-radio-telescope-for-17-years https://www.theguardian.com/science/2015/may/05/microwave-ov...
- RobotToaster 3y ago
  Imagine spending 17 years to find the source of interference, and it's just Kyle with his chicken tenders.

JumpCrisscross 3y ago

> Wouldn’t this interfere with those measurements Towed sensors and multiple passes over known calibration zones?

samus 3y ago

Surely the influence of some of these sources of noise can be modeled and filtered out. A University of Vienna currently conducts experiments to measure the gravitational force at very small sales, and they already have to do this with things like crowds moving about the city during rush hours.

westurner 3y ago
Sources of Noise?! Doesn't that mean that the gravitational field is an information storage and transmission medium; a signal channel? Is it lossy? Is there a routable signal path to block harassing calls? Is it slower or cheaper than nonlocal entanglement; like quantum radar? What is the minimum energy necessary to cause a propagating thresholdable-as-binary pertubation of a gravitational field?
- adonovan 3y ago
  It sure is a medium! One Denver (IIRC) gravitational experiment could measure the field distortion caused by 100,000 people and cars at a local sports arena. [citation needed]
  - westurner 3y ago
    Is there a butterfly effect -like minimum pertubation for gravitational wave propagation through matter or massful things, at least? Is there something that's low-enough power to not EM-burn a brainstem in a crytographically-keyed medical device with key revocation? Does a fishing lure bobber on the water produce gravitational waves as part of the n-body gravitational wave fluid field, and how separable are the source wave components with e.g. Quantum Fourier Transform/or and other methods? Butterfly effect: https://en.wikipedia.org/wiki/Butterfly_effect https://en.wikipedia.org/wiki/Butterfly_effect Chaos theory: https://en.wikipedia.org/wiki/Chaos_theory https://en.wikipedia.org/wiki/Chaos_theory Quantum chaos: https://en.wikipedia.org/wiki/Quantum_chaos https://en.wikipedia.org/wiki/Quantum_chaos Superfluid Quantum Gravity: Backscatter: https://en.wikipedia.org/wiki/Backscatter https://en.wikipedia.org/wiki/Backscatter
- samus 3y ago
  Not a formal definition, but noise is simply the undesirable parts of the output of any information processing device, be it a sensor, an amplifier, or a transmission medium. But on Earth it's simply not practical as such. Gravitational waves observatories are used to detect events such as neutron star or black hole mergers that are otherwise unobservable, but they require an insane level of precision to be detected.

RobotToaster 3y ago

Mount it on a UUV?