Cool app lets you zoom in from a coffee bean to a carbon atom, so that you can compare sizes. Along the way, you see a grain of sand, a skin cell and many other tiny things. This is the first time I've ever had a sense of these objects' sizes. Cells are actually bigger than I thought they were. I wish the zoomer would keep going. I want to see some sub-atomic particles on the scale.
posted by grumblebee on Oct 28, 2009 - 43 comments

One of the hardest things for people to understand about the universe is just how big it is. There are three approaches typically used in describing its size. The first, the song, was pioneered by Monty Python (NSFWish, wireframe of naked woman) and then done just as masterfully by the Animaniacs. The second, the zoom method has been featured twice before here on the blue. The third method is the comparison method (skip to 1:30, unless you like looking at a image of the solar system with terrible distorted orbits), yielding some truly beautiful videos (this one found via the fantastic Bad Astronomy blog). These videos go, at most, as far as looking at the local cluster or the Virgo Supercluster. There are two videos that attempt to show the size of the entire universe, one unsuccessfully (although with great music) and one successfully. (Warning, all links except the first one, are to YT videos). [more inside]
posted by Hactar on Jul 1, 2009 - 74 comments

College student builds a tank. [more inside]
posted by Burhanistan on Apr 8, 2008 - 39 comments

Nanoreisen. "A virtual discovery journey into the worlds of micro- and nano-cosmos." [flash] A kind of thematic followup to this.
posted by stavrosthewonderchicken on Jul 30, 2007 - 6 comments

The universe [flash]. I know, it's on a corporate site, and you have to sit through some pretentious Japanglish while it loads, but being able to use your mousewheel to scroll from femtometers up to the 100 billion lightyear scale is dazzling. I love cosmic zooms. Remember to pray that there's intelligent life in space, because there's bugger-all down here on Earth, except for folks like Metafilter's own kokogiak, who shows us everything in the solar system bigger than 200 miles in diameter.
posted by stavrosthewonderchicken on Mar 30, 2007 - 29 comments

The Bohlen-Pierce scale is a musical scale which has thirteen notes spread evenly across one and a half octaves, so that the highest note is three times the frequency of the lowest. Compare with the western twelve-tone scale, which has twelve notes spread evenly across one octave, where the highest note is twice the frequency of the lowest. Both are tempered scales, and both have close approximations to 'just intonations', meaning you could play the scales by plucking a string clamped at certain ratios like 1/2, 1/4, 5/3, etc. One of the independant co-inventors of the scale, John Pierce, was also a famous electrical engineer best known for inventing the communications satellite. You can listen to Pachelbel's Canon(midi link) rewritten in this scale.
posted by PercussivePaul on Nov 11, 2006 - 46 comments

Here's an interesting series of scale/perspective images showing what all the water on Earth (1.4087 billion cubic kilometres of it), including sea water, ice, lakes, rivers, ground water, clouds, etc. would look like in comparison to the total spherical area of the Earth, and then again showing All the air in the atmosphere (5140 trillion tonnes of it) gathered into a ball at sea-level density. Both illustrations shown on the same scale as the Earth. via
posted by jonson on Nov 13, 2005 - 36 comments