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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Tantalum
Tantalum Sample from Wooden Book
3D
Sample from Wooden Book.
Source: Max Whitby of RGB
Contributor: Max Whitby of RGB
Acquired: 12 May, 2003
Text Updated: 11 August, 2007
Price: Donated
Size: 0.5"
Purity: 99.9%
Tantalum
Tantalum Skull plates
3D3D
Skull plates.
Source: eBay seller carlrw
Contributor: Theodore Gray
Acquired: 15 July, 2003
Text Updated: 11 March, 2007
Price: $61
Size: 3"
Purity: >99%
Sample Group: Body Parts+Medical
Tantalum
Tantalum Weck Hemoclip
3D3D
Weck Hemoclip.
Source: eBay seller shauna74
Contributor: Theodore Gray
Acquired: 29 January, 2004
Price: $10.50
Size: 0.1"
Purity: 99%
Sample Group: Body Parts
Tantalum
Tantalum Museum-grade sample
3D3D
Museum-grade sample.
Source: Theodore Gray
Contributor: Theodore Gray
Acquired: 24 February, 2004
Text Updated: 11 August, 2007
Price: See Listing
Size: 2"
Purity: >99%
Sample Group: RGB Samples
Tantalum
Tantalum Suture thread
3D3D
Suture thread.
Source: eBay seller artie324
Contributor: Theodore Gray
Acquired: 17 August, 2004
Text Updated: 11 March, 2007
Price: $5
Size: 3"
Purity: 99%
Sample Group: Medical
Tantalum
Tantalum Spring Leaf of Holly in tantalum
3D3D
Spring Leaf of Holly in tantalum.
Source: Shire Post Mint
Contributor: Shire Post Mint
Acquired: 10 June, 2006
Text Updated: 11 August, 2007
Price: Donated
Size: 1"
Purity: 99%
Sample Group: Coins
Tantalum
Tantalum Anodized foils
3D3D
Anodized foils.
Source: Ethan Currens
Contributor: Ethan Currens
Acquired: 1 July, 2006
Text Updated: 19 November, 2007
Price: Donated
Size: 2"
Purity: 99.99%
Tantalum
Tantalum Tantalum evaporation boat
3D3D
Tantalum evaporation boat.
Source: Ethan Currens
Contributor: Ethan Currens
Acquired: 30 October, 2006
Text Updated: 19 November, 2007
Price: Donated
Size: 4"
Purity: 99%
Tantalum
Tantalum Element coin
3D3D
Element coin.
Source: Dave Hamric
Contributor: Theodore Gray
Acquired: 1 December, 2006
Text Updated: 14 January, 2007
Price: $16
Size: 0.75"
Purity: >99%
Sample Group: Coins
Tantalum
Tantalum Fantasy coin
3D3D
Fantasy coin.
Source: eBay seller equillink
Contributor: Theodore Gray
Acquired: 20 January, 2007
Text Updated: 21 January, 2007
Price: $25
Size: 1"
Purity: >99%
Sample Group: Coins
Tantalum
Tantalum Thin scrap foil
3D3D
Thin scrap foil.
Source: Anonymous
Contributor: Anonymous
Acquired: 18 February, 2008
Text Updated: 8 March, 2008
Price: Donated
Size: 4"
Purity: >99%
Tantalum
Tantalum Chopped bulk piece
3D3D
Chopped bulk piece.
Source: Ethan Currens
Contributor: Ethan Currens
Acquired: 30 April, 2008
Text Updated: 29 January, 2009
Price: Anonymous
Size: 1"
Purity: 99.99%
Tantalum
Tantalum Twice-melted button
3D3D
Twice-melted button.
Source: Ethan Currens
Contributor: Ethan Currens
Acquired: 30 April, 2008
Text Updated: 2 June, 2008
Price: Anonymous
Size: 1"
Purity: 99.99%
Tantalum
Tantalum Metal salesmans sample
3D3D
Metal salesmans sample.
Source: eBay seller jacav111
Contributor: Theodore Gray
Acquired: 27 December, 2008
Text Updated: 28 December, 2008
Price: $134/set
Size: 1.25"
Purity: 99%
Tantalum
Tantalum Tantalum wire
3D3D
Tantalum wire.
Source: eBay seller avitarunlimited
Contributor: Theodore Gray
Acquired: 8 February, 2009
Text Updated: 8 February, 2009
Price: $50
Size: 0.01"
Purity: 99%
Tantalum
Tantalum Tantalum capacitors
3D3D
Tantalum capacitors.
Source: Radio Shack
Contributor: Theodore Gray
Acquired: 17 April, 2009
Text Updated: 17 April, 2009
Price: $2
Size: 0.25"
Purity: <30%
Tantalum
Tantalum Skull plates, another view
3D3D
Skull plates, another view.
Source: eBay seller carlrw
Contributor: Theodore Gray
Acquired: 21 April, 2009
Text Updated: 21 April, 2009
Price: $61
Size: 3"
Purity: >99%
Sample Group: Body Parts+Medical
Tantalum
Tantalum Coltan ore
3D3D
Coltan ore.
Source: Jensan Scientifics
Contributor: Theodore Gray
Acquired: 16 October, 2009
Text Updated: 18 October, 2009
Price: Anonymous
Size: 1"
Composition: FeNb2O6+FeTa2O6
Tungsten
Tungsten Surplus 11 pound metal cylinder
3D
Surplus 11 pound metal cylinder.
Source: Neil Lipson
Contributor: Theodore Gray
Acquired: 29 May, 2002
Price: $315
Size: 3"
Purity: 96.3%
Tungsten
Tungsten Fine wire
3D3D
Fine wire.
Source: eBay seller 7890inky
Contributor: Theodore Gray
Acquired: 23 July, 2002
Price: $22
Size: 2.5"
Purity: >99%
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