What is a barber pole?
According to the National Oceanic and Atmospheric Administration, barber pole is a slang term used by weather and storm spotters to describe "a thunderstorm updraft with a visual appearance including cloud striations that are curved in a manner similar to the stripes of a barber pole.
What is a barber pole Lane marker?
The 41 Combat Engineer Regiment, a part of the Canadian Military Engineers, produced and delivered over 16,000 distinctive barber pole lane markers during World War II. The famous Barber Pole Group was originally a group of 120 Flower-class corvettes built in Canada during World War II, and charged primarily with protecting freighter convoys.
What are some good books about the barber pole?
Andrews, William (1904). At the Sign of the Barber's Pole: Studies in Hirsute History. Cottingham, Yorkshire: J.R. Tutin. pp. 1 –8. Barber pole birmingham. John H. Lienhard (2001). "The Sign of the Barber Pole". The Engines of Our Ingenuity. Episode 1635. University of Houston School of Engineering. NPR. KUHF-FM.
Should barber poles be allowed in beauty salons?
In some American states, such as Michigan in March 2012, legislation has emerged proposing that barber poles should only be permitted outside barbershops, but not traditional beauty salons.
What is the point of barber poles?
A barber's pole is a type of sign used by barbers to signify the place or shop where they perform their craft. The trade sign is, by a tradition dating back to the Middle Ages, a staff or pole with a helix of colored stripes (often red and white in many countries, but usually red, white and blue in the United States).
Why is a barber pole red and white stripe?
The red and white stripes of the barber pole originated from a practice known as bloodletting. One of the nastier aspects of barber history, this practice involved drawing blood from the patient, in an attempt to cure them of disease or infection.
Why does a barber pole spin?
Spinning barber poles are meant to move in a direction that makes the red (arterial blood) appear as if it were flowing downwards, as it does in the body. Facts like this are often forgotten in the barbering industry.
What does the blue on a barber pole stand for?
In Europe, barber poles traditionally are red and white, while in America, the poles are red, white and blue. One theory holds that blue is symbolic of the veins cut during bloodletting, while another interpretation suggests blue was added to the pole as a show of patriotism and a nod to the nation's flag.
What does the blue stripe on a barber pole mean?
In Europe, barber poles are red and white, so the blue stripe is a United States addition. Some historians say that the blue stripe represents the color of veins, but the more likely story is that red, white, and blue became the standard as a show of patriotism.
How does the barber pole illusion work?
In the barber-pole illusion (BPI), a diagonally moving grating is perceived as moving vertically because of the shape of the vertically oriented window through which it is viewed—a strong shape-motion interaction.
Why did barbers use leeches?
Around the Middle Ages, Barber Surgeons quickly evolved to become an important part of the community. In addition to having the skill to perform difficult surgeries, Barbers would perform “blood letting” and teeth pulling! Blood letting is a medical procedure that uses leeches to “cure” patients of blood disease.
Where did the barbers pole come from?
In 1163, Pope Alexander III ordered monks and priests to stop performing bloodletting anymore, so barbers started offering the service instead, according to History. During the treatment, barber-surgeons would give patients poles to hold, the original barber poles.
What is the red and white thing outside a barber shop?
The barber pole takes a great amount of influence from bloodletting: the red representing the blood and the white representing the bandages used to stop the bleeding. The pole is thought to symbolise a stick that the patient squeezed to make their veins bulge, making it easier for the barber to identify a vein.
Did barbers used to be surgeons?
Up until the 19th century barbers were generally referred to as barber-surgeons, and they were called upon to perform a wide variety of tasks. They treated and extracted teeth, branded slaves, created ritual tattoos or scars, cut out gallstones and hangnails, set fractures, gave enemas, and lanced abscesses.
Why did barbers use leeches?
Around the Middle Ages, Barber Surgeons quickly evolved to become an important part of the community. In addition to having the skill to perform difficult surgeries, Barbers would perform “blood letting” and teeth pulling! Blood letting is a medical procedure that uses leeches to “cure” patients of blood disease.
Did barbers used to be dentists?
Starting from the Middle Ages, barbers often served as surgeons and dentists. In addition to haircutting, hairdressing, and shaving, barbers performed surgery, bloodletting and leeching, fire cupping, enemas, and the extraction of teeth; earning them the name "barber surgeons".
What does the barber pole mean?
The term on the barber pole is pilot jargon that refers to flying an aircraft at the maximum safe velocity. The airspeed Indicator on aircraft capable of flying at altitude features a red/white striped needle resembling a barber pole. This needle displays the V MO (Maximum Operating Velocity) or—at altitude—the M MO ( Mach Limit Maximum Operating Speed) of the aircraft. This needle also indicates the maximum operating Mach number above the VMO/MMO changeover level. As the aircraft increases in altitude and the air decreases in density and temperature, the speed of sound also decreases. Close to the speed of sound, an aircraft becomes susceptible to buffeting caused by shock waves produced by flying at transonic speeds. Thus, as the speed of sound decreases, so the maximum safe operating speed of the aircraft is reduced. The "barber pole" needle moves to indicate this speed. Flying "on the barber pole" therefore means to be flying the aircraft as fast as is safe to do so in the current conditions.
What color is the barber pole?
After the formation of the United Barber Surgeon's Company in England, a statute required the barber to use a red and white pole and the surgeon to use a red pole. In France, surgeons used a red pole with a basin attached to identify their offices. Blue often appears on poles in the United States, possibly as a homage to its national colors. Another, more fanciful interpretation of these barber pole colors is that red represents arterial blood, blue is symbolic of venous blood, and white depicts the bandage.
How to measure magnetic field?
The strength and direction of magnetic fields and electric currents can be measured using a " magnetoresistive barber-pole sensor" (also called a " hermetic proximity sensor"), and its performance can be depicted using a mathematical formula. Such a sensor interleaves a series of permanent magnet strips with a series of magnetoresistive strips. The "conductive barberpole strips are canted across the sensor and connect one magnetoresistive strip, over a permanent magnet strip, to another magnetoresistive strip." This is said to provide a "uniform magnetic field throughout the sensor" thereby enhancing its resistance to external magnetic fields. The technology is used in wireless sensor networks which "have gathered a lot of attention as an important research domain" and were "deployed in many applications, e.g., navigation, military, ambient intelligence, medical, and industrial tasks. Context-based processing and services, in particular location-context, are of key interest ..." (See Music (acoustic illusion), infra.)
What is a spinning barber pole?
A spinning barber's pole in front of a barber shop in Tokyo, Japan (video) See also: Barberpole illusion and Strange loop. A spinning barber pole create s a visual illusion, in which the stripes appear to be traveling up or down the length of the pole, rather than around it.
What does the color blue mean on a barber pole?
Another, more fanciful interpretation of these barber pole colors is that red represents arterial blood, blue is symbolic of venous blood, and white depicts the bandage.
How tall is the barber shop pole?
In Forest Grove, Oregon, the "World's Tallest Barber Shop Pole" measures 72 feet (22 m).
What is the red and white pole used by barbers?
After the formation of the United Barber Surgeon's Company in England, a statute required the barber to use a red and white pole and the surgeon to use a red pole . In France, surgeons used a red pole with a basin attached to identify their offices.
How to determine yardage on a golf course?
In addition to yardage markers, players can carry devices that will help them determine yardage to the green or the pin without the aid of a marker or diagram. Some rangefinders use the relative size of the flag to determine distance to the pin when you look through the scope. Modern technology includes GPS devices capable of reading precisely where you are on a hole and giving you a yardage readout to the green and other locations.
What is a golf fairway marker?
Golf fairway markers are a series of disks placed on courses, usually on par 4s or par 5s, that signify the distance from that point in the fairway to the center of the green. The markers are color coded according to distance, and while most courses use the same system, check with a course employee if you are unsure.
What is the distance of a red disk on a golf course?
Yardage markers come in a few primary forms on most courses. Most common are colored disks at set distances on every hole. Generally, a red disk denotes 100 yards to the center of the green, white 150 yards and blue 200 yards.
