Samples with Rotatable Images (1485)

These are samples that have QuickTimeVR 3D and JavaScript stereoscopic rotatable images associated with one or more samples. You can download the latest version of QuickTime for Macintosh or Windows from http://www.apple.com/quicktime/download. To make these files I first used a "VR Micro Studio", which consisted of an up-side-down panorama head, a three-axis adjustable tripod mount, and a 1000W halogen light. The camera was covered with tinfoil to keep it from burning up under the hot light. After making about 130 3D images (almost 10,000 individual photographs) I got a fiber optic illumination system and my studio looked like this. It was much more flexible, and doesn't get hot at all. Light really is the key to photographing small things: You need a lot of it close in. Then after another 50 or so I finally got an automatic turntable. Commercial stepper-motor systems are available, but they are very expensive and I've found they all vibrate, which disturbs delicate arrangements. I instead use a cheap surplus turntable with a 5 revolution per hour timing motor, combined with a time lapse control set to take a picture every 10 seconds. That works out to 72 images in one 12-minute revolution. If you do the math, the motion blur is less than one pixel even at a 1/15 second exposure, so a stepper motor that starts and stops is really not necessary. That was good, but in preparing for a Discovery Channel film project, I needed to upgrade to 360 steps instead of 72, and I wanted to be able to handle all sizes from nearly microscopic to a couple hundred pounds. The solution was a pair of custom-machined (by me, of course) turntables, cast iron mounts and a slate base for everything (because of vibrations, which are a big problem for samples less than about 5mm across). In late 2004 the studio looks like this.

Click any element tile below to get the full entry for that element, or click on the sample picture to go directly to the description of that sample.

Text and images Copyright (c) 2010 by Theodore W. Gray.
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Aluminum
Aluminum Dentopharma aluminum compound
3D3D
Dentopharma aluminum compound.
Source: eBay seller alpinevarietystore
Contributor: Theodore Gray
Acquired: 16 October, 2009
Text Updated: 18 October, 2009
Price: $4
Size: 0.5"
Purity: <50%
Aluminum
Aluminum Very complex mirror
3D3D
Very complex mirror. (External Sample)
Location: Donald Barnhart
Photographed: 30 October, 2008
Text Updated: 15 November, 2008
Size: 3"
Purity: 99%
Aluminum
Aluminum Rock of alum
3D3D
Rock of alum.
Source: eBay seller saratthasamuccaya
Contributor: Theodore Gray
Acquired: 8 February, 2009
Text Updated: 8 February, 2009
Price: $6/pound
Size: 3"
Composition: KAl(SO4)2.12H2O
Aluminum
Aluminum Cooking alum
3D3D
Cooking alum.
Source: Walmart
Contributor: Nick Mann
Acquired: 11 March, 2009
Text Updated: 12 March, 2009
Price: $1
Size: 2"
Composition: KAl(SO4)2.12H2O
Aluminum
Aluminum Ruby
3D
Ruby. (External Sample)
Location: John Gray's Collection
Photographed: 11 March, 2003
Size: 3"
Composition: Al2O3
Aluminum
Aluminum Ruby  from Jensan Set
3D3D
Ruby from Jensan Set.
Source: Jensan Scientifics
Contributor: Jensan Scientifics
Acquired: 17 March, 2003
Price: Donated
Size: 1"
Composition: Al2O3
Aluminum
Aluminum Synthetic ruby boule
3D3D
Synthetic ruby boule.
Source: eBay seller phumin2007
Contributor: Theodore Gray
Acquired: 1 December, 2008
Text Updated: 2 December, 2008
Price: $10
Size: 2.5"
Composition: Al2O3
Aluminum
Aluminum Synthetic ruby boule
3D3D
Synthetic ruby boule.
Source: eBay seller phumin2007
Contributor: Theodore Gray
Acquired: 27 December, 2008
Text Updated: 28 December, 2008
Price: $10
Size: 2.5"
Composition: Al2O3
Aluminum
Aluminum Synthetic ruby boule
3D3D
Synthetic ruby boule.
Source: eBay seller phumin2007
Contributor: Theodore Gray
Acquired: 27 December, 2008
Text Updated: 28 December, 2008
Price: $10
Size: 2.5"
Composition: Al2O3
Aluminum
Aluminum Sapphire boule
3D
Sapphire boule.
Source: SoCal (Nevada), Inc
Contributor: Theodore Gray
Acquired: 28 April, 2004
Price: $65
Size: 4"
Composition: Al2O3+Ti
Aluminum
Aluminum Tourmaline Dravite variant
3D3D
Tourmaline (Dravite variant).
Source: Theodore Gray
Contributor: Theodore Gray
Acquired: 20 September, 2005
Price: Donated
Size: 1"
Composition: NaMg3Al6(BO3)3[Si6O18](OH)3(OH)
Silicon
Silicon Chunk of 99.9999% crystal
3D3D
Chunk of 99.9999% crystal.
Source: David Franco
Contributor: David Franco
Acquired: 17 May, 2002
Price: Donated
Size: 1.5"
Purity: 99.9999%
Silicon
Silicon Rod
3D3D
Rod.
Source: SoCal (Nevada), Inc
Contributor: Theodore Gray
Acquired: 11 July, 2003
Price: $58
Size: 4.5"
Purity: >99.9999%
Silicon
Silicon Diced wafers
3D3D
Diced wafers.
Source: SoCal (Nevada), Inc
Contributor: Theodore Gray
Acquired: 11 July, 2003
Price: $5
Size: 1/2"
Purity: >99.99999%
Silicon
Silicon Four and a half pound lump
3D
Four and a half pound lump.
Source: eBay seller gardnrobe
Contributor: Theodore Gray
Acquired: 11 July, 2003
Price: $31
Size: 8"
Purity: >99.999%
Silicon
Silicon Less pure four pound lump
3D3D
Less pure four pound lump.
Source: eBay seller flabster
Contributor: Theodore Gray
Acquired: 10 January, 2004
Text Updated: 4 May, 2007
Price: $16
Size: 6"
Purity: >99.5%
Silicon
Silicon Silicon mirror
3D3D
Silicon mirror.
Source: eBay seller flabster
Contributor: Theodore Gray
Acquired: 20 June, 2004
Price: $10
Size: 1.5"
Purity: 99.9999%
Silicon
Silicon Small wafers
3D3D
Small wafers.
Source: eBay seller danfuboco
Contributor: Theodore Gray
Acquired: 3 September, 2004
Price: $25
Size: 1.5"
Purity: 99.99%
Silicon
Silicon Fine powder
3D3D
Fine powder.
Source: eBay seller matky
Contributor: eBay seller matky
Acquired: 10 September, 2004
Price: Donated
Size: 1"
Purity: 99.97%
Silicon
Silicon Square boule
3D3D
Square boule.
Source: eBay seller campgems
Contributor: Theodore Gray
Acquired: 10 September, 2004
Text Updated: 5 December, 2006
Price: $20
Size: 3"
Purity: 99.999%
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