Subject:
|
Re: sensors, actuators, and software, oh my!
|
Newsgroups:
|
lugnet.robotics
|
Date:
|
Mon, 14 Apr 2003 22:43:01 GMT
|
Viewed:
|
1156 times
|
| |
|
|
Michael Pender wrote:
> A simpler way to say this is that radiation through X-Ray frequencies is
> an electromagnetic wave, while radiation above X-Ray frequencies is
> particle matter (e.g. Beta particles are helium nuclei).
Beta particles are electrons, alphas are helium nuclei. Neither is
electromagnetic - they are actual particles with mass, whereas photons have
no or nearly no mass. Gamma rays, however, are high-energy enough to see
gamma-ray photons as discrete (but nearly massless!) particles. Picture it
as a short snippet of a wave.
> Actually, gravity waves are detectable with the right equipment. A simple
> way to think of this is that gravity varies according to location in
> space,
> especially altitude. The 'frequency' is naturally expressed in spatial
> units, not temporal units.
Totally different thing. If you shake your hand really fast, you make very
low frequency gravity waves that propagate through spacetime like ripples
in a pond (I think.) They have a frequency in peaks/time, just like any
other wave. However, it is not known whether there is such a thing as a
graviton (which would be the coveted IVB here) or whether gravity is just a
bending of spacetime. Ask a superstring theorist.
--
"I love deadlines. I especially love the whooshing sound they make as
they go by."
Nick Tarleton - nickptar@mindspring.com
|
|
Message has 1 Reply:
 | | Re: sensors, actuators, and software, oh my!
|
| Nick Tarleton <nickptar@mindspring.com> wrote in message news:HDCv3p.23o0@lugnet.com... (...) My bad - I always get those two confused. (...) have (...) But gamma radiation has a wavelength less than the minimum atomic radius, so they can't be (...) (22 years ago, 15-Apr-03, to lugnet.robotics)
|
Message is in Reply To:
| | Re: sensors, actuators, and software, oh my!
|
| (...) More than 3, which is the number of sensor inputs on a Mindstorms brick. :-) (...) I see that you adopt the modern relativist view . I agree to the extent that it depends on the number of RCX bricks present because they only have three sensor (...) (22 years ago, 14-Apr-03, to lugnet.robotics)
|
9 Messages in This Thread:
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
Active threads in Robotics
|
|
|
|
|
|
