Showing posts with label Homeschooling. Show all posts
Showing posts with label Homeschooling. Show all posts
16 April 2013
28 January 2012
The pictographic Hobo Code
“The pictographic Hobo Code is a fascinating system of symbols understood among the hobo community. Because hobos weren’t typically welcomed (and were often illiterate), messages left for others in the community had to be easy for hobos to read but look like little more than random markings to everyone else to maintain an element of secrecy. The code features certain elements that appear in more than one symbol, such as the circles and arrows that made up the directional symbols. Hash marks or crossed lines usually meant danger in some form.”
28 December 2011
Strange Christmas Space Explosion
Imaged Above: Artist’s impression of the model suggested for GRB 101225A
Credit: Aurore Simonnet, NASA E/PO, Sonoma State University
The Christmas sky last year was lit up by an extraordinarily powerful and mysteriously long-lasting explosion in space that scientists now suggest was a comet smacking into a dense star or a peculiar supernova death.
Radiation from gamma-ray bursts, the most powerful explosions ever seen in the universe, strikes Earth’s atmosphere from random directions in space about twice a day. These bursts can be roughly divided into two kinds, ones lasting less than two seconds, and ones lasting up to minutes.
However, the strange gamma-ray burst detected on Christmas Day 2010 by NASA’s Swift satellite lasted at least half an hour.
Scientists think shorter gamma-ray bursts are generally caused by merging neutron stars — dead stars made up of super-dense neutron matter. Longer bursts are typically thought to originate from hypernovas, in which giant stars that explode as incredibly powerful supernovas spew two opposing jets of energy as they die; we see them head-on as bursts.
12 December 2011
04 December 2011
How to Freeze Bubbles
Frozen bubbles would make amazing photo props!
We’d love to get these under a macro lens, too.
Did you know that you can freeze bubbles?
Go outside on any day when it’s below 32 degrees F and try this: blow a bubble and then catch it on the bubble wand. Wait a few moments while it freezes- it will turn into a cool crystal ball before it shatters!
Too cold to go outside? You can learn how to make your own crystal ball bubbles in the freezer with soap by checking out the site below…
15 October 2011
20 August 2011
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