4 ms·

If you don’t like clocks then the nicest earth experiment are free electron lasers. They basically rely on length contraction to create coherent light waves (yo

by ivalm 6y ago

If you don’t like clocks then the nicest earth experiment are free electron lasers. They basically rely on length contraction to create coherent light waves (you accelerate electrons until magnetic undulators are spaced at target wavelength due length contraction). You can dial whatever electron speed you want and get corresponding wavelength (although no greater than the at-rest spacing for obvious reasons) and it all perfectly matches relativistic prediction and works well/incredibly reproducible. https://en.m.wikipedia.org/wiki/Free-electron_laser https://en.m.wikipedia.org/wiki/Free-electron_laser

johndoe42377 6y ago
Where is time in this setting? Synchronization of wave length does not involve time. The device is made according the abstract, derived notion of time, same as it used the notion of a number. Nature does not posses any numbers, however. Mind of an intelligent observer does. It is useless to argue on HN. I have literally 5 or 6 accounts banned for attacking a textbook ideas. It is easy to trace them all using HN backend. Most of current HN crowd assume that I am some flat earth anti 5G lunatic, while I have background in philosophy, and down to earth physics way above that of downvoters.
- ben_w 6y ago
  > It is useless to argue on HN. I have literally 5 or 6 accounts banned for attacking a textbook ideas. Then don’t. > I have background in philosophy, I have an A-Level in philosophy, but it’s a terrible grade and I don’t get to make up for that in philosophical discussions by waving around my Software Engineering degree. > and down to earth physics way above that of downvoters. That choice of phrase alone will make you look like a nut. Would you care to rephrase that, with specifics? Do you work professionally with aerodynamic simulations, for example? Or perhaps you want tell us about the video game engine whose physics model you coded?

by ivalm 6y ago

johndoe42377 6y ago

Where is time in this setting? Synchronization of wave length does not involve time. The device is made according the abstract, derived notion of time, same as it used the notion of a number. Nature does not posses any numbers, however. Mind of an intelligent observer does. It is useless to argue on HN. I have literally 5 or 6 accounts banned for attacking a textbook ideas. It is easy to trace them all using HN backend. Most of current HN crowd assume that I am some flat earth anti 5G lunatic, while I have background in philosophy, and down to earth physics way above that of downvoters.

ben_w 6y ago
> It is useless to argue on HN. I have literally 5 or 6 accounts banned for attacking a textbook ideas. Then don’t. > I have background in philosophy, I have an A-Level in philosophy, but it’s a terrible grade and I don’t get to make up for that in philosophical discussions by waving around my Software Engineering degree. > and down to earth physics way above that of downvoters. That choice of phrase alone will make you look like a nut. Would you care to rephrase that, with specifics? Do you work professionally with aerodynamic simulations, for example? Or perhaps you want tell us about the video game engine whose physics model you coded?