Friday, March 30, 2012

Physics Video Lectures of MIT

Here is the link to the excellent PHYSICS Video Lectures by Professor Walter Lewin of MIT.
It's part of MIT Open Courseware...!!


http://ocw.mit.edu/courses/physics/8-01-physics-i-classical-mechanics-fall-1999/video-lectures/


Photo of Prof. Lewin swinging on a pendulum.
Professor Walter Lewin demonstrates that the period of a pendulum is independent of the mass hanging from the pendulum. This demonstration can be viewed on the video of Lecture 10. (Image courtesy of Markos Hankin, Physics Department Lecture Demonstration Group).

Courtesy: MIT Logo MITCopyright MITMIT LogoMIT Logo

Saturday, March 24, 2012

Hubble Telescope see globular cluster of Messier 9

The Hubble Space Telescope has produced the most detailed image so far of Messier 9, a globular star cluster located close to the center of the galaxy.
Beautiful glittering jewels....!

Click on the Image or the following link to read more.
http://www.nasa.gov/multimedia/imagegallery/image_feature_2204.html

Messier 9

Credit: NASA and ESA

Friday, March 9, 2012

oh! No..! SOLAR Storm....!

Space weather starts at the sun.
 It begins with an eruption such as a huge burst of light and radiation called a solar flare or a gigantic cloud of solar material called a coronal mass ejection (CME)
The effects of those eruptions happen at Earth, or at least near-Earth space. Scientists monitor several kinds of space "weather" events -- geomagnetic storms, solar radiation storms, and radio blackouts – all caused by these immense explosions on the sun.
They cause wide disruptions in Radio communications, power blackouts but for the beautiful aurora.....
Artist illustration of events on the sun changing the conditions in Near-Earth space.






Read more : http://www.nasa.gov/mission_pages/sunearth/news/storms-on-sun.html


http://www.nasa.gov/mission_pages/sunearth/spaceweather/index.html

Wednesday, March 7, 2012

Nasa to release TMA in 5 sounding rockets to study Jet Stream

Nasa is gearing up to have 5 consecutive launches of sounding rockets which would releasr Tri-Methyl-Aluminum higher in the sky which would be acting like tracers in the Jet Stream.
It would be tracked by the ground based cameras.
A similar experiment was done by ISRO in Jan 2010 during the annular solar eclipse.

Approximate locations in Troposphere and Thermosphere where the low and high jet streams are located, respectively. Tracer release and camera observation locations for ATREX mission.


Read more:
http://www.nasa.gov/mission_pages/sunearth/missions/atrex-nightlight.html

Sunday, March 4, 2012

Ocean Surface Currents does not Cross the Equator. WHY ...?


Lynne Talley, Physical Oceanographer, Climate, Atmospheric Sciences, and Physical Oceanography (CASPO) division, Scripps Institute of Oceanography answers.....

It's because of the Vorticity Conservation which is related to Angular Momentum Conservation.

Read the simple article in detail:
http://explorations.ucsd.edu/for-kids/voyager/2012/voyager-why-dont-ocean-surface-currents-cross-the-equator/