Optics
Optics is the branch of physics which involves the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it. Optics usually describes the behaviour of visible, ultraviolet, and infrared light. Because light is an electromagnetic wave, other forms of electromagnetic radiation such as X-rays, microwaves, and radio waves exhibit similar properties.
Most optical phenomena can be accounted for using the classical electromagnetic description of light. Complete electromagnetic descriptions of light are, however, often difficult to apply in practice. Practical optics is usually done using simplified models. The most common of these, geometric optics, treats light as a collection of rays that travel in straight lines and bend when they pass through or reflect from surfaces. Physical optics is a more comprehensive model of light, which includes wave effects such as diffraction and interference that cannot be accounted for in geometric optics. Historically, the ray-based model of light was developed first, followed by the wave model of light. Progress in electromagnetic theory in the 19th century led to the discovery that light waves were in fact electromagnetic radiation.
Alcoholic spirits measure
Alcoholic spirits measures are instruments designed to measure exact amounts or shots of alcoholic spirits.
The most common products used today to measure spirits are the thimble measure and the non-drip measure, often referred to as an optic. The terms Optic, Optic Pearl, OpticJade and OpticOpal are all trademarks of Gaskell & Chambers owned by the company IMI Cornelius (UK) Ltd, but the word “optic” has become synonymous with inverted or non-drip spirit measures.
The optic or non-drip measure is mounted beneath an inverted spirit bottle, whereby the alcohol dispenses into the measure and is discharged when a lever on the measure is pushed up. This mechanism ensures that a correct spirit measure can be dispensed each time, as the inverted bottle allows the measure to be replenished in the optic after each shot has been dispensed. Bottles are available to the trade with their labels upside down so that they will be the right way up when mounted on the optic.
The thimble measure is a stainless steel vessel, like a shot glass, predominantly used as a measurement with free flow pourers.
Optic (disambiguation)
An optic (not to be confused with optics, the science of light) is something that changes the behavior or properties of light.
Optic may also refer to:
OPTIC can refer to :
Praxis (Delia Bajo and Brainard Carey)
Praxis is an art collaborate composed of a husband and wife team. Brainard Carey (born October 7, 1968) is an American, Delia Bajo (born November 2, 1974) is a Spaniard. They live and work in New York City and New Haven, CT.
History
Praxis was formed in 1999. They had their first major exhibition in The Whitney Biennial in 2002 and they were reviewed by the critic and philosopher Arthur Danto for The Nation.
Whitney Museum of American Art, 2002, Praxis. Photo courtesy of Praxis
Whitney Museum of American Art, 2002, Praxis. Photo courtesy of Praxis
Whitney Museum of American Art, 2002, Praxis. Photo courtesy of Praxis
Whitney Museum of American Art, 2002, Praxis. Photo courtesy of Praxis
Whitney Museum of American Art, 2002, Praxis. Photo courtesy of Praxis
Whitney Museum of American Art, 2002, Praxis. Photo courtesy of Praxis
As Debra Singer said in the Whitney Biennial catalog that year, "as part of an ongoing performance project, this two-person collaborative team offers gallery visitors a menu of four free services: foot washes, hugs, Band-Aid applications to help heal visible or non-visible wounds, and gifts of dollar bills. Their interactive, nurturing performances offer alternative modes of economic and social exchange that serve as a comforting antidote to the potentially alienating effects of a world often dominated by technology and consumerism."
Praxis (entrepreneurship)
Praxis is an educational program that aims to teach entrepreneurship to young people and that a traditional college education is not the only way to success. Praxis was founded by Isaac Morehouse in 2013.
Background
After interacting with businesspeople and students while working for an educational nonprofit, Morehouse noticed a skills gap between recently-graduated college students and employers. Having been homeschooled himself and then exposed to a university-education, Morehouse noticed the disparity in skills taught and skills demanded by the professional world, as well as the frustration faced by students who expected a job upon graduation. This led Morehouse to realize that most of the perceived value of a college degree comes from its value as a signaling mechanism, showing employers that a candidate is superior to those without the signal. Employers told Morehouse that a lack of work experience was the primary reason they did not hire candidates with college degrees. The lack of the strength in the signal led Morehouse to found Praxis in 2013 as an alternative signal for employers and students, combining a traditional liberal arts education with work experience than that which is gained in college.
Praxis (store)
Praxis, full name Praxis Doe-Het-Zelf Center B.V. (Praxis Do-It-Yourself Centre B.V.) is a Dutch Hardware store-chain, headquartered in Diemen. The company started in 1978 in Venlo and as of 2009 it has 136 stores spread over the Netherlands of which 26 have an extended assortment, the so called "Megastores". Praxis employs about 5000 people.
Praxis focusses on construction products and on decorative do-it-yourself products. It also supplies garden materials. It is known to the general public for its sponsoring of the RTL 4 television program Eigen Huis & Tuin.
Praxis is part of the Maxeda retail group. Current board member of Maxeda responsible for the DIY section is Nick Wilkinson.
