View allAll Photos Tagged FluidDynamics
Capturing the intricate play of oil droplets reflecting light against a blurred background, this scene evokes a vibrant atmosphere reminiscent of the eclectic vibes found in contemporary pop music.
Police helicopter flying around outside my place, 2014; one of my first photos with my new DSLR, got more to put up soon.
This vibrant scene echoes the fluid animations of the 90s, capturing the playful interaction of bubbles and hues reminiscent of animated sequences that celebrate creativity and movement.
Love these 'mechanical manifestations'.. Two vortices are inter-acting like the cog wheels in the gear box
Good old-fashioned oil paint that's been sitting in the basement for a couple of decades. The clear vehicle on top (linseed oil & solvent) has completely separated from the white pigment particles, which have settled to the bottom. The first few passes with the stirring stick left these fine streamers.
Enjoying my afternoon tea and being amused by Douglas Adams instructions on preparing a decent cup of tea: "One or two Americans have asked me why it is that the English like tea so much, which never seems to them to be a very good drink. To understand, you have to know how to make it properly.
There is a very simple principle to the making of tea and it's this - to get the proper flavour of tea, the water has to be boiling (not boiled) when it hits the tea leaves. If it's merely hot then the tea will be insipid. That's why we English have these odd rituals, such as warming the teapot first (so as not to cause the boiling water to cool down too fast as it hits the pot). And that's why the American habit of bringing a teacup, a tea bag and a pot of hot water to the table is merely the perfect way of making a thin, pale, watery cup of tea that nobody in their right mind would want to drink. The Americans are all mystified about why the English make such a big thing out of tea because most Americans have never had a good cup of tea. That's why they don't understand. In fact the truth of the matter is that most English people don't know how to make tea any more either, and most people drink cheap instant coffee instead, which is a pity, and gives Americans the impression that the English are just generally clueless about hot stimulants.
So the best advice I can give to an American arriving in England is this. Go to Marks and Spencer and buy a packet of Earl Grey tea. Go back to where you're staying and boil a kettle of water. While it is coming to the boil, open the sealed packet and sniff. Careful - you may feel a bit dizzy, but this is in fact perfectly legal. When the kettle has boiled, pour a little of it into a tea pot, swirl it around and tip it out again. Put a couple (or three, depending on the size of the pot) of tea bags into the pot (If I was really trying to lead you into the paths of righteousness I would tell you to use free leaves rather than bags, but let's just take this in easy stages). Bring the kettle back up to the boil, and then pour the boiling water as quickly as you can into the pot. Let it stand for two or three minutes, and then pour it into a cup. Some people will tell you that you shouldn't have milk with Earl Grey, just a slice of lemon. Screw them. I like it with milk. If you think you will like it with milk then it's probably best to put some milk into the bottom of the cup before you pour in the tea(This is socially incorrect. The socially correct way of pouring tea is to put the milk in after the tea. Social correctness has traditionally had nothing whatever to do with reason, logic or physics. In fact, in England it is generally considered socially incorrect to know stuff or think about things. It's worth bearing this in mind when visiting.). If you pour milk into a cup of hot tea you will scald the milk. If you think you will prefer it with a slice of lemon then, well, add a slice of lemon.
Drink it. After a few moments you will begin to think that the place you've come to isn't maybe quite so strange and crazy after all."
This is ESA’s Large Diameter Centrifuge (LDC). It gives scientists access to high gravity levels for minutes, days or even weeks on end. Based at ESA’s ESTEC technical centre in Noordwijk, the Netherlands, the LDC is a centrifuge designed not for astronaut training as you might have thought at first, but specifically for research projects.
A wide range of hypergravity experiments can be undertaken in the LDC facility, in particular biology, biochemistry, microbiology, optical physics, material sciences, fluid dynamics, geology and plasma physics investigations can be performed.
The eight-metre-diameter LDC can operate at up to 20 G, with four gondolas able to accommodate up to 80 kg of payloads, with a central gondola as a control. Two additional gondolas can be optionally attached to one mid-arm to simultaneously provide different G-levels. Experiments can be spun for up to six months non-stop.
Technical stuff
This is a rather straightforward shot. Just one single photo, straight from the camera with little or no post-production. I included a copyright watermark as my photos have been frequently copied without any mentioning or permission. The copyright is there to stay, so don't bother commenting on that.
My Visit To My Cardiologist
He decided to replace my entire heart with this artificial version that he just happens to have available. Can't beat that for good luck!! --- Not really... I am just kidding. This is just a model to show to patients like me. I think it comes apart.
Fortunately I need only one heart valve repaired. it's just the Mitral valve that doesn't close properly. I don't even need a valve replacement. It must be hard to get in there with pliers and pipe valve wrenches. I've done lots of that work while renovating old buildings...;))
I can barely remember what life was like when I could be very active and was filled with energy.
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A comment by Melissa "The Gifted photographer" has reminded me of something from my past. Years ago, I worked for a company that developed heart assist machines, the first intra-aortic balloon pump, that was needed to keep people alive until heart replacements were available or even possible.
The founder and Director of The Avco Everett Research Laboratory in Everett, Massachusetts was Prof. Arthur Kantrowitz, formerly of Cornell University. Fluid dynamics was the lab's specialty, especially at high temperatures, like the Space Shuttle faces upon reentry. His brother, Dr. Adrian Kantrowitz was a surgeon at Maimonides Medical Center in Brooklyn, NY. It was an interesting combination that led to an excellent project.
In the 1960s and 1970s, when I worked there, Professor Arthur R. Kantrowitz led the design and development at AERL of the first intra-aortic balloon pump. The balloon pump is a temporary cardiac assist device which has been used worldwide on three million people. The device was used on his own failing heart.
en.wikipedia.org/wiki/Arthur_Kantrowitz
Here is a photo of Dr. Adrian Kantrowitz, right, in 1967 with two other surgical pioneers, Dr. Christiaan Barnard, left, and Dr. Michael E. DeBakey from Texas.
Taken from www.nytimes.com/2008/11/19/us/19kantrowiztz.html
AERL's Founder and Director was Adrian's brother, Arthur, who was very brilliant and completely charismatic. I enjoyed working there, and it's successor in Textron Systems in Wilmington, Massachusetts, more than anywhere else, ever.
Here is Arthur's, nickname Arkey, obituary in the NY Times, It is very nostalgic for me.
www.nytimes.com/2008/12/09/science/09kantrowitz.html
Chic
Addendum:
I am adding these paragraphs to point out that I did not work on the balloon pump project. My Ph.D. from M.I.T., the year I was hired at AERL, was in Nuclear Physics (an entirely different story). However, I had spent a few years working in "Reentry Physics" at MIT's Lincoln Laboratory. Approximately a year and a half of that had been at the US' intercontinental ballistic missile range in the Pacific Ocean. Lincoln's radar and optical station were located in Kwajalein Atoll in the Marshall Islands in the Pacific Ocean. Our work was reviewed, on site, by a team of Nobel Prize winning physicists who made up ARPA's Jason Committee. (Remember in Greek legends, Jason pursued the golden fleece.)
As a result, I was hired at AERL to work on the project for which the lab had been founded: the safe reentry of ballistic missiles.
AERL operated like a university college of science. There were regular colloquia in all subjects of interest to the Lab. Everyone could attend any meeting. It was a great way to keep track of progress or difficulties in fields of active interest. I should mention, that Professor Hans Bethe from Cornell University, the former head of the Theoretical Division of The Manhattan Project visited monthly to review and comment on progress and problems.
I'll never forget giving my pre-hiring presentation to the whole re-enry committee as part of the acceptance process. I was grilled and fried by the committee members. It was a test of courage and poise as well as knowledge..;)) I was sure that I would not be offered a position! I always felt, after that initial hazing,,;)) and subsequent presentations to AERL committees, I could present to any group in the world with complete confidence.
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