Drip …drip by Asquiff on Flickr.A través de Flickr: An alternative version of a shot I took a fair while back. …Strobist Info: 1 Nissin Di622 hand-held slightly above and off to the right of the rear out-of-focus tap. The Nissin unit was triggered using the on-camera flash (which I’d covered over with a piece of black cloth) and was manually set to its lowest setting. The shutter was also triggered by remote. I used a neutral density filter to allow me to keep the aperture to 1.8 without over-exposing.
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Drip …drip by Asquiff on Flickr.

A través de Flickr:
An alternative version of a shot I took a fair while back.

…Strobist Info:
1 Nissin Di622 hand-held slightly above and off to the right of the rear out-of-focus tap. The Nissin unit was triggered using the on-camera flash (which I’d covered over with a piece of black cloth) and was manually set to its lowest setting. The shutter was also triggered by remote. I used a neutral density filter to allow me to keep the aperture to 1.8 without over-exposing.

Ab initio (CPMD) simulation of water, 50 picoseconds, by softsimu on Flickr.

A través de Flickr:
The video shows the dynamcs of water molecules over 50 picoseconds in a Car-Parrinello ab initio simulation with van der Waals corrections (see the reference for details). Temperature was set to 300 K. A couple of hydrogen bonds are their formation and breaking is also shown (red lines). The total system had 54 water molecules and the total simulation time was about 120 ps. On ab initio standards, this simulation is very long.

Water molecules undergo large rotations (large-angle jumps). Follow also the vibrations of the hydrogen atoms.

Reference:

1. Long-time correlations and hydrophobe modified hydrogen bonding dynamics in hydrophobic hydration, J.T. Titantah, M. Karttunen, J. Am. Chem. Soc. 134, 9362-9368 (2012).

2. Water dynamics: Relation between hydrogen bond bifurcations, molecular jumps, local density & hydrophobicity, John T. Titantah and Mikko Karttunen, submitted

Give Me a Hug! by Out of Chicago on Flickr.A través de Flickr: This set of images is from the National Mississippi River Museum and Aquarium. We went with another family to the indoor water park in Dubuque last winter. The museum was next to our hotel. When you’re hauling around a couple of three year olds, they make for great photographic subjects, but it’s tough to exercise those other photographic muscles sometimes. So when we spotted this guy in his tank doing his thing, we knew that we’d be coming back during nap time. Many photographers wait for that one week during the year that they take a photo trip or go on a workshop. Or they don’t put the effort into a shot unless they’re at Arches National Park. But you can find amazing subjects all around you. In this case, I was drawn to the colors in the room, the lines of the hand rails, and, of course, the presence of “Oscar” the Octopus. Today’s technology allows you to get shots that you would not have been able to capture 10 years ago. These images were all taken at ISO 6400. And the reason they have the pop that they do is through HDR software and Nik plugins. Some people may say that you’re cheating using this software, but without it, it would be very difficult to convey the feeling of this amazing creature through photography. Don’t wait for that trip to Moab. Get out there this weekend and look for that subject to turn into your own “masterpiece”. And if you’re looking for a little push in the right direction, don’t forget that I will be leading a walk tomorrow where you will have plenty of opportunities to work your magic. You can sign up at the www.bestofchicagowalkingtours.com/?page_id=348
Pop-upView Separately

Give Me a Hug! by Out of Chicago on Flickr.

A través de Flickr:
This set of images is from the National Mississippi River Museum and Aquarium. We went with another family to the indoor water park in Dubuque last winter. The museum was next to our hotel. When you’re hauling around a couple of three year olds, they make for great photographic subjects, but it’s tough to exercise those other photographic muscles sometimes. So when we spotted this guy in his tank doing his thing, we knew that we’d be coming back during nap time.

Many photographers wait for that one week during the year that they take a photo trip or go on a workshop. Or they don’t put the effort into a shot unless they’re at Arches National Park. But you can find amazing subjects all around you. In this case, I was drawn to the colors in the room, the lines of the hand rails, and, of course, the presence of “Oscar” the Octopus.

Today’s technology allows you to get shots that you would not have been able to capture 10 years ago. These images were all taken at ISO 6400. And the reason they have the pop that they do is through HDR software and Nik plugins. Some people may say that you’re cheating using this software, but without it, it would be very difficult to convey the feeling of this amazing creature through photography.

Don’t wait for that trip to Moab. Get out there this weekend and look for that subject to turn into your own “masterpiece”. And if you’re looking for a little push in the right direction, don’t forget that I will be leading a walk tomorrow where you will have plenty of opportunities to work your magic. You can sign up at the www.bestofchicagowalkingtours.com/?page_id=348


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