Monday, November 21, 2011
Friday, October 07, 2011
Rotation Around Polaris
This time-lapse image shows how the night
sky appears to revolve around Polaris as the
Earth spins on its axis. Polaris (aka the North Star)
is positioned directly abopve the Earth's geographic north
pole, so is centedered on Earth's axis. It appears
as a stationary dot in the center of the rotating star field.
Eclipse Amazingness
This is the "pinhole effect" that happens under a tree
during a solar eclipse.
See all of the little crescent suns?
Wow, look at these.
The moon's shadow darkens part of Earth during a solar eclipse. Only people underneath the center of that dark spot will see the total eclipse; others will see a partial eclipse. This shot was taken from the Mir space station in August 1999.
Photograph courtesy Centre National d'Etudes Spatiales
The moon's lunar highlands (light areas) and maria, or volcanic plains, (dark areas) are clearly visible in this photograph taken by the Expedition 10 crew onboard the International Space Station. Photograph courtesy NASA
These pictures are from National Geographic Photography.
Tuesday, September 06, 2011
Monday, July 11, 2011
Thursday, June 16, 2011
Friday, May 20, 2011
Tuesday, April 26, 2011
Animal Beatbox
This is a fun, artistic rendering of the diversity of the animal kingdom. Click the picture to watch the video:
Thank you to GT8 for this video!
Thank you to GT8 for this video!
Tuesday, March 22, 2011
Science Quote of the Day
"Washington [Roebling] was very nervous about it when his dad died, he was like, holy crap type of thing." -- B (per 5) when asked to supply one important fact he learned from watching the Brooklyn Bridge video.
Tuesday, February 01, 2011
The power of the pen!
I wrote to BrainPOP because in their GRAVITY quiz, they referred to Inertia as a force. It is not a force. Today I got a reply:
Dear Ms. Petersen,
Thanks for contacting BrainPOP!
In your message, you pointed out a clumsy bit of phrasing in our “Gravity” quiz. Acting on your advice, I changed the word “forces” to “factors.”
In your message, you pointed out a clumsy bit of phrasing in our “Gravity” quiz. Acting on your advice, I changed the word “forces” to “factors.”
The updated version of the quiz should appear online in a week or so, as soon as our server updates itself.
Thank you again for bringing this issue to our attention. If you have any further questions, comments, or concerns, please let us know.
Sincerely,
Brian Levinson
BrainPOP.com
Friday, January 14, 2011
Wednesday, January 12, 2011
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