Skip to main content

/ WMS Science Teachers/ Group items tagged Holes

Group items tagged

Filter: All | Bookmarks | Topics Simple Middle

ScienceShot: Probing a Black Hole - ScienceNOW - 0 views

news.sciencemag.org/...shot-probing-a-black-hole.html

shared by Robert Ryshke on 31 Dec 11 - No Cached

Robert Ryshke on 31 Dec 11

Credit: NASA/CXC/MIT/F. Baganoff, R. Shcherbakov et al. How do you probe a supermassive black hole? Take a look at the pulsars that orbit it. These rapidly spinning neutron stars flash regular radio pulses, and in an upcoming issue of The Astrophysical Journal astronomers say that the timing of such pulses could provide a new understanding of the 4 million solar mass black hole at the center of the Milky Way.

<div class="cArrow"> </div><div class="cContentInner">Credit: NASA/CXC/MIT/F. Baganoff, R. Shcherbakov et al. How do you probe a supermassive black hole? Take a look at the pulsars that orbit it. These rapidly spinning neutron stars flash regular radio pulses, and in an upcoming issue of The Astrophysical Journal astronomers say that the timing of such pulses could provide a new understanding of the 4 million solar mass black hole at the center of the Milky Way.</div>

...

Cancel

Pin Hole Theatre « Teach. Brian. Teach. - 1 views

teachbrianteach.wordpress.com/...pin-hole-theatre

optics labs physics pin hole theatre teach brian

shared by John Burk on 15 Aug 11 - No Cached

John Burk on 15 Aug 11

Great idea for a lab-build a pinhole theater

<div class="cArrow"> </div><div class="cContentInner">Great idea for a lab-build a pinhole theater</div>

...

Cancel

Onset of Electrical Resistance Measured for First Time | Wired Science | Wired.com - 0 views

www.wired.com/...electrical-resistance-speed

resistance circuits voltage video physics

shared by John Burk on 21 Dec 11 - No Cached

Using a fast-pulsing laser, physicists have recorded the first moments of electrical resistance, the friction that generates heat as electricity travels through circuits.
...

Cancel
Physicists knew electrical resistance didn’t kick in the moment a voltage was applied. Electrons experience some freedom before slowing to a crawl and scattering. What wasn’t certain was how quickly they make that transition (illustrated in the animation above, with electrons in blue, “electron holes” left by departing electrons in red, and voltage signified by the green arrow).
...

Cancel

John Burk on 21 Dec 11

post contains very interesting video simulation showing electrons in a semiconductor responding to the applied voltage.

<div class="cArrow"> </div><div class="cContentInner">post contains very interesting video simulation showing electrons in a semiconductor responding to the applied voltage. </div>

...

Cancel

1 - 3 of 3

Showing 20▼ items per page

Related searches