Phones have had accelerometer/gyros for a while now. Problem with pinpointing one’s location is how to get a starting fix and how to deal with drift and loss of signal.
The way devices have dealt with it is to periodically confirm and baseline with a satellite fix.
If this method does away with all that, it could remove the reliance on overhead signals and those trying to jam them in hostile zones.
Pretty cool. Lots of potential.
Even a perfect sensor will accumulate errors in the nav solution over time because there’s no such thing as a perfect gravity model. No free-running INS will ever replace GPS long term. This shit is so frustrating to see in the press.
“replacing GPS” is a stretch, but it’s some sci-fi tech to use when GPS can’t be used
Can anyone explain how lasers are used to cool? I would prefer ELI18 but i probably need this ELI5
If you use the right color of light, then the doppler effect means that the atoms will only absorb (and be pushed by) light that they are headed towards. That means that the light will always act as a brake for the atoms and never an accelerator, so the fluid will cool. If you do this from all directions, the fluid will start to stay still in one place and get very close to absolute zero. Idk, I just read the Wikipedia article, but that is my best attempt at an ELI18
I love you just a little bit!
