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David Nygren and Ariel Goldschmidt in LBL Physics Xenon Lab.
credit: Lawrence Berkeley Nat'l Lab - Roy Kaltschmidt, photographer
XBD201008-00953-03
Believe it or not, ThorLabs actually sells a tool specifically for cutting the glass window off of photodiodes. We call it the "can opener" becacuse that's what it is.
It turns out that an off-the-shelf digital camera has some sensitivity to infrared. Here's looking at part of our optical table, which is criss-crossed by 1064nm (infrared) laser beams. The digital camera sees laser light scattered from optics as purple. The large block here is our "pre-mode cleaner," a resonant cavity (er, chunk of quartz) that makes the laser light even more monochromatic.
James Burns
Contrived
"A Smashing Success"
This photo depicts a medicine ball (which is a weighted ball used for exercise) being dropped from approximately 1 meter onto the wood surface of a racquetball court. The weight of the ball is rated at 7 kilograms. This photo, along with these values, can be used to represent several properties of physics. First, using basic kinematics, we can use the equation Vf^2 = Vi^2 + 2(a)(d) to find the speed of the ball right before it impacts the floor. Where 'Vf' is the final velocity (unknown), 'Vi' is the initial velocity (0 m/s), 'a' is the acceleration due to gravity (9.8 meters/second^2) and 'd' is the vertical displacement (1 meter). After plugging those values in the equation, we find that right before the ball impacts the floor it is moving 4.4 meters per second.
With this, we can then find how much kinetic energy the ball possessed immediately before striking the ground. The equation for this is Kinetic Energy = 1/2(m)v^2, where 'm' is the ball's mass (7 kilograms) and 'v' is the velocity, which we found to be 4.4 meters per second. Again, by simply plugging in these values, we find that the kinetic energy of the ball is 68 Joules. The Joule is a measure of energy.
Because the ball has all this energy when it contacts the ground, much of it is dissipated by the deformation of the structure of the ball as seen in the picture.
For my introduction to modern physics class we have to write our formula sheets for the midterm, this is just my first draft.
Visiting Assistant Professor of Physics Kristen Thompson led her class outdoors to teach students how to use telescopes in conducting calculations of the size of the sun.
On October 31, 2009, a group of Duke physics Ph. D.’s and former research
associates gathered at a fancy Chinese restaurant, Lisian, located in the Samsung Electronics tower in Seoul, Korea. After a sumptuous dinner the group relocated to a nearby café to continue cherishing the memories at Duke physics with Professor Moo-Young Han who is spending his sabbatical at Seoul National University.
From left:
Dr. Chang Won Lee (Samsung Electronics)
Dr. Heejeong Jeong (Samsung Electronics)
Dr. Jaebum Yoo (Samsung Electronics)
Prof. Sung Ha Park (Sungkyunkwang University)
Dr. Jin Man Suh (Samsung Electronics)
Prof. Moo-Young Han (Duke/Seoul National University)
Dr. Seong Hee Park (Korea Atomic Energy Research Institute)
[not pictured, but present at the reunion: In addition to those in the photo, Prof. Shin attended dinner but had to leave early before the coffee shop chat. Also, Prof. Yu of SNU could not attend at all. Prof. Yu is chairman of the Physics dept at SNU. Prof. Shin is not a Duke alum, but is a visitor to Duke. Prof. Yu, chair of physics dept at Seoul National Univ. was a postdoc researcher with Prof.
Horst Meyer.]
This Photo Published with permission from Prof. Moo-Young Han (Duke/Seoul National University)
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My physics equation dx4/dt=ic graces the swimsuits and bikinis, while the golden gun is designed in proportion with the golden ratio, and the photos are oft cropped in divine proportions!
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Knox College physics professor Tom Moses adjusts a Fabry-Perot interferometer that he and three of his students built in a physics department research lab, as part of a project to develop a lower-cost version of the instrument used to measure the wavelength of light.
A Fabry-Perot interferometer built by Knox College physics professor Tom Moses and three of his students -- a project to develop a lower-cost version of the instrument used to measure wavelengths of light. The interference pattern, show here as a series of stripes, resolves to a bullseye as the instrument is adjusted.
Eigentlich sollte ich ja lernen, aber wiesooft lenk ich mich nur davon ab, z.b. dadurch dass ich Fotos mach ;)
Was man hier teilweise sieht ist die Herleitung der kinetischen, potentiellen und gesamt Energie eines Elektrons auf der n-ten Bahn um einen Atomkern nach den Bohrschen Postulaten. ^^
Molly Wellinghoff
Contrived
"Hair Raising Balloons"
This picture depicts static electricity, but in order to understand it you have to go on a molecular level. An atom contains protons, which are positively charged, at the center and electrons, which are negatively charged, surrounding it on the outside. The number of protons in an atom can't change, but electrons can either be added or taken away. This causes the atom to have a positive or negative charge. If an atom loses electrons, then the protons outnumber it and it is positively charged. If electrons are added to the atom, then the electrons outnumber the protons and it is positively charged. In this case, electrons were transferred from the balloon to her hair, giving the balloon a positive charge and her hair a negative charge. This is due to the Conservation of Electric Charge, which says that electric charge can't be created or destroyed. Instead they jump from one object to another. Static electricity is the buildup of electrons on an object. Since positive and negative charges attract, her hair is attracted to the balloon and sticks to it. Eventually the positive and negative charges will neutralize and her hair will fall back down.
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All my photography celebrates the physics of light! The McGucken Principle of the fourth expanding dimension: The fourth dimension is expanding at the rate of c relative to the three spatial dimensions: dx4/dt=ic .
Light Time Dimension Theory: The Foundational Physics Unifying Einstein's Relativity and Quantum Mechanics: A Simple, Illustrated Introduction to the Unifying Physical Reality of the Fourth Expanding Dimensionsion dx4/dt=ic !: geni.us/Fa1Q
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“The mountains are calling and I must go.” --John Muir
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A Simple Guide to the Principles of Fine Art Nature Photography: Master Composition, Lenses, Camera Settings, Aperture, ISO, ... Hero's Odyssey Mythology Photography)
All art is but imitation of nature.-- Seneca (Letters from a Stoic - Letter LXV: On the First Cause)
The universe itself is God and the universal outpouring of its soul. --Chrysippus (Quoted by Cicero in De Natura Deorum)
Season of mists and mellow fruitfulness
Close bosom-friend of the maturing sun
Conspiring with him how to load and bless
With fruit the vines that round the thatch-eves run;
To bend with apples the moss'd cottage-trees,
And fill all fruit with ripeness to the core;
To swell the gourd, and plump the hazel shells
With a sweet kernel; to set budding more,
And still more, later flowers for the bees,
Until they think warm days will never cease,
For Summer has o'er-brimm'd their clammy cells. --To Autumn. by John Keats
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All my photography celebrates the physics of light! The McGucken Principle of the fourth expanding dimension: The fourth dimension is expanding at the rate of c relative to the three spatial dimensions: dx4/dt=ic .
Lao Tzu--The Tao: Nature does not hurry, yet everything is accomplished.
Light Time Dimension Theory: The Foundational Physics Unifying Einstein's Relativity and Quantum Mechanics: A Simple, Illustrated Introduction to the Unifying Physical Reality of the Fourth Expanding Dimensionsion dx4/dt=ic !: geni.us/Fa1Q
"Between every two pine trees there is a door leading to a new way of life." --John Muir
Epic Stoicism guides my fine art odyssey and photography: geni.us/epicstoicism
“The clearest way into the Universe is through a forest wilderness.” --John Muir
Epic Poetry inspires all my photography: geni.us/9K0Ki Epic Poetry for Epic Landscape Photography: Exalt Fine Art Nature Photography with the Poetic Wisdom of John Muir, Emerson, Thoreau, Homer's Iliad, Milton's Paradise Lost & Dante's Inferno Odyssey
“The mountains are calling and I must go.” --John Muir
Epic Art & 45EPIC Gear exalting golden ratio designs for your Hero's Odyssey:
Support epic fine art! 45surf ! Bitcoin: 1FMBZJeeHVMu35uegrYUfEkHfPj5pe9WNz
Exalt the goddess archetype in the fine art of photography! My Epic Book: Photographing Women Models!
Portrait, Swimsuit, Lingerie, Boudoir, Fine Art, & Fashion Photography Exalting the Venus Goddess Archetype: How to Shoot Epic ... Epic! Beautiful Surf Fine Art Portrait Swimsuit Bikini Models!
Some of my epic books, prints, & more!
Exalt your photography with Golden Ratio Compositions!
Golden Ratio Compositions & Secret Sacred Geometry for Photography, Fine Art, & Landscape Photographers: How to Exalt Art with Leonardo da Vinci's, Michelangelo's!
Epic Landscape Photography:
A Simple Guide to the Principles of Fine Art Nature Photography: Master Composition, Lenses, Camera Settings, Aperture, ISO, ... Hero's Odyssey Mythology Photography)
All art is but imitation of nature.-- Seneca (Letters from a Stoic - Letter LXV: On the First Cause)
The universe itself is God and the universal outpouring of its soul. --Chrysippus (Quoted by Cicero in De Natura Deorum)
Season of mists and mellow fruitfulness
Close bosom-friend of the maturing sun
Conspiring with him how to load and bless
With fruit the vines that round the thatch-eves run;
To bend with apples the moss'd cottage-trees,
And fill all fruit with ripeness to the core;
To swell the gourd, and plump the hazel shells
With a sweet kernel; to set budding more,
And still more, later flowers for the bees,
Until they think warm days will never cease,
For Summer has o'er-brimm'd their clammy cells. --To Autumn. by John Keats
Photographs available as epic fine art luxury prints. For prints and licensing information, please send me a flickr mail or contact drelliot@gmail.com with your queries! All the best on your Epic Hero's Odyssey!
These athletes seem to defy physics as they go through their routine.
I was lucky enough to have great access to take pictures wherever I wanted. I hope I didn't distract the judges with my rapid shooting.
Repository: Duke University Archives. Durham, North Carolina, USA. library.duke.edu/uarchives
Trying to locate this photo at the Duke University Archives? You’ll find it in the University Archives Photograph Collection.
By Prof. Dr. Erik Verlinde, university of Amsterdam.
Abstract
Theoretical insights from black hole physics combined with recent developments in string theory suggest that at a microscopic level the Universe has a holographic description in terms of degrees of freedom that live on the boundary of space. This is called the "holographic principle". By taking the holographic principle as starting point a simple dimensional argument naturally leads to the emergence of gravity as described by the laws of Newton, or after a relativistic
generalization by the Einstein equations. At a microscopic level the gravitational force is caused by a change in the amount of information, measured by entropy, as a result of the displacements of bodies. Hence, gravity is an entropic force. String theory provides an effective framework in which the entropic origin of gravity can be made manifest. Finally, I discuss the possible implications for quantum mechanics and cosmology.
www.rug.nl/natuurkunde/nieuws/colloquia/archive/20100318P...
A computer display emits linearly polarized light. This plastic glass is set in front of a white screen and photographed through a polarizing filter, set parallel to the display's polarization direction.
The man, the myth, the legend. This bust of Tesla stands in the Harvard Physics library. Ironically, while Tesla did attend more than one university, he never held a degree. This speaks more to the time than higher education itself, but it's still an interesting tidbit. Especially for one of the most highly regarded scientists (or inventor, if you prefer) of the period and, indeed, of all time.
When I was at this school, this row of laboratories (physics, chemistry and biology) made up the southern wall of an open U-shaped quadrangle where we assembled in ranks by house to listen to the Sunday morning roll call. It's clearly visible in aerial photos of the school as the left-hand side of the U.
Today the U has become a closed-off rectangle. The hallowed grass on which only gods and prefects might walk is now weedy.
A car on a banked curve is shown, with vectors indicating the force of gravity and the normal reaction force from the road on the car.