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LAN_403

Extreme Electronics

Sat Apr 22 2006, 01:48PM

Registered Member #74 Joined: Thu Feb 09 2006, 09:17AM
Location: Nottingham UK
Posts: 99

A japanese style bridge at Port Merion in North Wales.

Just a little paint shop pro activity to black & white the background.

Noelle

Sat Apr 22 2006, 08:22PM

Napoleonic Powermonger
Registered Member #2 Joined: Thu Jan 26 2006, 05:10AM
Location: Meadville, PA
Posts: 70

Joe, your animal pictures are cute. I love the squirrel. Hee.

I've been dabbling with photography for a couple years now. Here's a couple of my favorite shots:

The only 'shopping I do to my pictures is to sharpen, clarify, fix brightness/contrast, etc.

I've got more in an online gallery here

Dr. Drone

Sat Apr 22 2006, 10:39PM

Registered Member #290 Joined: Mon Mar 06 2006, 08:24PM
Location:
Posts: 1673

Cesiumsponge

Sun Apr 23 2006, 05:11AM

Registered Member #397 Joined: Wed Apr 19 2006, 12:56AM
Location: Western Washington
Posts: 125

Many (most, all?) CCDs pick up IR frequencies near visible and I tested that by taking a picture of my rifle. The taclight has a removable infrared filter unit outputting 125/250 lumens (w/o filter) depending on configuration and is used as an IR illuminator for extending the operational range of night amplification devices. There is also a unit with a pair of visible/IR laser diodes for target painting as well as a holosight with an ultra-low light illuminated reticle that is safe with NV amplification. Another shot of the purple IR haze can be found here on a manufacturer's customer gallery:

I took a week-long trip into the Olympic National (rain)Forest on the Washington penninsula area about half a year ago. I brought that cheapy digital camera to test conditions and a film SLR to bracket shoot goodies (though photography wasn't a main goal on this trip), which I embarassingly dropped and shattered the lens near the end of my trip (though the body and film are fine). I suppose I shouldn't juggle 20lbs of hanging equipment on MOLLE gear, a rifle (bears/wolves/coyotes/mountain lions abound), and two cameras all while hiking. There were lots of neat streams/waterfall/river pictures but none of the digital ones turned out due to lack of shutter speed control. I'll try scanning actual photos sometime.

Last picture is the Tacoma Narrows bridge, the same one that infamously shook itself to pieces due to local winds 66 years ago. We had to take it to the penninsula and I'm almost never down that area so I snapped a picture while driving. They're building a new bridge next to it...either to complement it, or to replace it. Bridges are so much larger in person than they are in photos.

Extreme Electronics

Sun Apr 23 2006, 11:40PM

Registered Member #74 Joined: Thu Feb 09 2006, 09:17AM
Location: Nottingham UK
Posts: 99

Last picture is the Tacoma Narrows bridge

Wow Tacoma Narrows bridge Thats one bridge I cant forget, after seeing the clip of it destroying itself many times in Physics. What always amazes me about that clip is the people walking and driving across the bridge whilst its is buckling +/- 3' underneath them.

A duck in a cup. No photo editing at all

The Wumpus

Sun Apr 23 2006, 11:59PM

Registered Member #325 Joined: Fri Mar 17 2006, 12:42AM
Location: Turku, Finland
Posts: 55

Just noticed the subject and wanted to post my best high-speed photo so far:

Tomato1 Tn

Link to (somewhat) larger version:
http://www.abo.fi/~joheriks/hispeed/tomato1.jpg

The subject is a small cherry tomato and the pellet travels at about 120 m/s. I was happy with this particular one since the entry and exit holes looks similar to Edgerton's classic apple photo.

Cesiumsponge

Mon Apr 24 2006, 12:14AM

Registered Member #397 Joined: Wed Apr 19 2006, 12:56AM
Location: Western Washington
Posts: 125

When I was driving over it, I kept mentally playing that B&W footage and remembering the parked (or abandoned?) car just bouncing up and down with the twisting bridge.

I took some photographs of an 88 year old Waltham Vanguard 23 ruby/diamond jewel railroad-grade, mechanical pocket watch. It still runs perfectly albiet needs a professional cleaning as there is a pesky piece of lint that occasionally stops the movement.

There is an amazing amount of artistic and mechanical marvel in these timepieces and they are second only to chronometers in accuracy relative to period pieces. Railroad grade pieces had to satisfy or exceed Federal guidelines after a major railroad accident involving a watch that stopped for four minutes, and restarted on an engineer. Mechanical watches will run at different speeds depending on it's orientation, and temperature fluxuations. It was a marvel that something this could have orientation and thermal compensation in a purely mechanical fashion. The "damaskeen" cosmetic grinding work on it is amazing as well considering the scale of the piece and you don't see that type of cosmetic finish much, if at all today on even the most expensive watches like Piaget, Jaeger LeCoultre, Rolex, etc.

It's quite impressive seeing how many of these pieces were done on steam and belt-powered machines...under eye loupes and steady hands. Likewise these ruby and diamond bearings were done without the aid of modern devices such as abrasive waterjet or laser drilling. The watch in the picture is roughly 1.65" across from edge-to-edge of the gold casing. The square ground pattern in the center measure about .075x.075" for reference. Diamond and ruby jewels are nestled in 24k gold "caps" and hold the various bearings of the device.

Done on the same cheap-ass digital camera, but with the cheating help of a 7x optical comparator (without the reference scale attachment)

Simon

Mon Apr 24 2006, 12:24AM

Registered Member #32 Joined: Sat Feb 04 2006, 08:58AM
Location: Australia
Posts: 549

Wow! That level of engineering is an artform in itself.

I've got a few high-speed shots at home but nothing on that quality. One of my polyprojectitis itches is to reduce the capacitance of my triggered flash to get some sharper photos.

wrote ...

Wow Tacoma Narrows bridge Thats one bridge I cant forget, after seeing the clip of it destroying itself many times in Physics. What always amazes me about that clip is the people walking and driving across the bridge whilst its is buckling +/- 3' underneath them.

Why is it that every physics class that mentions resonance has to show that clip when I've never seen a Tesla coil pic in academia ever?

Extreme Electronics

Mon Apr 24 2006, 12:39AM

Registered Member #74 Joined: Thu Feb 09 2006, 09:17AM
Location: Nottingham UK
Posts: 99

Wumpus

Just noticed the subject and wanted to post my best high-speed photo so far:

Ive just had a look through your web site at the other highspeed photos you have done..
An Exhibition of High Speed Photography
Excelent work, both engineering and photography wise.
After seeing that, I'm really trying not to add high speed photography to my ever expanding project list....

Derek

Hazmatt_(The Underdog)

Mon Apr 24 2006, 02:34AM

Registered Member #135 Joined: Sat Feb 11 2006, 12:06AM
Location: Anywhere is fine
Posts: 1735

My Physics book shows only the output terminal of a Tesla Coil with a very small corona in the chapter on charges.

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