Saturday, April 29, 2006

Tickets to Ride

Sample: Two different German transportation tickets.
Source: One is from a Heidelberg bus, the other from the Ulm main train station.

To make up for Thursday's terrible post (I'm sorry to have infliced that on you), I figured I owed you a nice series of images, full of color. So here you are, a series of hologram-covered transportation passes from the convenient and inexpensive German public transportation system.

Heidelberg Bus Pass, 10x.

Heidelberg Bus Pass, 60x.

Heidelberg Bus Pass, 200x.

German Rail Pass, 10x.

German Rail Pass, 60x.

German Rail Pass, 200x.

German Rail Pass, 200x. Illuminated from a different angle.

German Rail Pass, 200x. Illuminated from a different angle.

Thursday, April 27, 2006

Mystery post

Sample: It's a mystery! Guess and win!

Mystery, 60x. Posted by Picasa

Wednesday, April 26, 2006


Sample: Two printed objects.
Source: Blue is from one of those accursed subscription cards, yellow is from the offending magazine. Compare and contrast. A short quiz will be given next period.

Blue Printing, 10x.

Blue Printing, 60x.

Blue Printing, 200x.

Yellow Printing, 10x.

Yellow Printing, 60x.

Yellow Printing, 200x.

Monday, April 24, 2006

TEM Grid

Sample: A 200 mesh copper transmission electron microscope (TEM) grid.
Source: Organishe Chemie III, Ulm, Germany.


A transmission electron microscope is a way of investigating objects much smaller than a wavelength of light. The general principle is similar - use a beam of electrons that is trransmitted through a copper mesh, but is stopped by your objects under study. You can see things as small as single atoms with a good enough instrument.

TEM Grid Back, 10x.

TEM Grid Back, 60x.

TEM Grid Back, 200x.

TEM Grid Front, 10x.

TEM Grid Front, 60x.

TEM Grid Front, 200x. Tiny holes! The diagonal across one of those squares is about a millimeter.

TEM Grid, 22,000x. These are nanoparticles of polyvinylcaprolactam (PVCL) and polyperfluorodecylmethacrylate (PPM). The large particles are mostly PVCL, and the small ones are PPM.

TEM Grid, 36,000x. I want one of these microscopes.

Saturday, April 22, 2006


Sample: A snakeskin from a really big snake.
Source: A garden in Colorado, graciously contributed by Elisabeth.

Snakeskin, 10x.

Snakeskin, 60x.

Snakeskin, 200x.

Snakeskin, 10x.

Snakeskin, 60x.

Snakeskin, 200x.

Friday, April 21, 2006


Sample: A moth.
Source: Found dried up in the lab.

There are a few things I never get tired of seeing through the microscope, and one of them is scales on an insect's wing. There are a large population of beautiful yellow swallowtails here, and I would love to see one of them up close.

Moth, 10x.

Moth, 60x.

Moth, 200x.

Moth eye, 60x.

Moth eye, 200x.

Thursday, April 20, 2006

Fax sensor

Sample: The sensing element from a fax machine.
Source: A fax machine I went all Office Space on.

Fax sensor, 10x.

Fax sensor, 60x.

Fax sensor, 200x.

Wednesday, April 19, 2006

One Ring

Sample: One Ring to rule them all. Well, one ring to look nice on a finger, anyway.
Source: The fires of Mount Doom. Well, not really. But it did come from Hawaii!

Graciously contributed by Michelle, and title inspired by swan_pr in a previous comment.

Ring, 10x.

Ring, 60x.

Ring, 200x.

Ring, 60x.

Ring, 60x.

Ring, 200x.

Tuesday, April 18, 2006

Fancy Necklace

Sample: A necklace with multiple regions of interest.
Source: Anne Barkow

Necklace, 10x.

Faceted side, 60x.

Iridescent side, 60x.

Faceted side, 200x.

Iridescent side, 200x.

Monday, April 17, 2006

Dead Leaf

Sample: A dead leaf.
Source: Near the brown plant, probably.

Dead Leaf, 10x.

Dead Leaf, 60x.

Dead Leaf, 200x.