A glow stick is a self-reliant, instant light source. It consists of a translucent plastic tube containing secluded substances when combined can produce light. It does not require any extra external energy sources. The light cannot be turned off after it is “lite”, but it is said that glow sticks can actually be used again by putting it in the freezer overnight then cracking it once more. Glow sticks are used in many ways some for emergency settings, recreation, entertainment, and in the military because they are portable and easy to activate. If you have seen a glow stick you will know that it is quite fascinating how the tube lights up with the bright glow. But just how exactly is that possible? Glow sticks were first made in the 1960s when a scientist, Edwin Chandross tried to copy fireflies. He thought it was fascinating how they gave off a natural light. He made the first glow stick from oxalyl chloride and hydrogen peroxide. Since Edwin’s invention many scientist after made improvements to the invention. The United States Navy worked on creating glow sticks independently and received a patent in 1973. Glow sticks started to become popular in the 1980s and since then are still very popular today. The largest glow stick was made in 2009 and was 8ft 4 inches tall. Glow sticks can be used for entertainment when dancing they are very popular for raves, parties, night clubbing, special events etc. glow sticks are the safest light sources in emergencies, They are used because they are very efficient and do not require any batteries or electricity. Glow sticks are portable and waterproof can bear high pressure situations and that is why military forces and campers use them and have them on hand. Glow sticks get their “glow” when two chemicals are mixed together because of a chemical reaction. The chemical reaction is called Chemiluminescence. A Typical glow stick has a plastic tube with a smaller inner tube inside. There are three components, two chemicals and a fluorescent dye which accepts the energy and helps covert to light. There is more than one way to make a glow stick, but the most common uses a solution of hydrogen peroxide and phenyl oxalate ester along with the fluorescent dye. The hydrogen peroxide is in its own compartment away from the other two components until ready to use. The fluorescent dye is what determines the subsequent color of the glow stick when the chemical solutions are combined.
This experiment was conduct to investigate the fluorescent behaviour of Leucophor PAF and to investigate the quenching of QBS with NaCl. It was found that the Leucophor PAF indeed satisfied the characteristic to act as whitening agent. It was also found that the quenching of QBS with NaCl was a diffusion-controlled collision process.
The “Moffatt Stick,” maybe the world’s oldest known hockey stick, was in the news a couple of years ago when its owner, Mark Presley of Berwick, NS, sold it to the Canadian Museum of History in Gatineau, Quebec for $300,000.
In 1895, Professor Wilhelm C. Roentgen, a German physicist, was working with a cathode ray tube, much like our fluorescent light bulb. The tube consisted of positive and negative electrodes encapsulated in a glass envelope. On November 8, 1895, Roentgen was conducting experiments in his lab on the effects of cathode rays. He evacuated all the air from the tube and passed a high electric voltage through it after filling it with a special gas. When he did this, the tube began to give off a fluorescent glow. Roentgen then shielded the tube with heavy black paper and discovered a green colored fluorescent light could be seen coming from a screen located a few feet away from the tube.
The radio revolutionised the way families spent time together and receive information. The movie theaters had an impact on how people forgot about the depression and made life seem better. Many homes in the 1920s also just got access to electricity while many homes were still lit by candle light, but became more prominent as the time period continued. Labor saving appliances of the 1920s made the household chores easy to accomplish than it used to be. The 1920s was enriched by many technological achievements that helped changed the way americans communicated, managed their health, and partook in leisurely activities.
It started with the British, with the arc lamp in 1835. For years after people around the world experimented on an incandescent lamp. They tried things like filling the bulb with gas but they did not last very long and they were very expensive. Finally in 1879, Thomas Edison made a bamboo filament (the part of the bulb that actually makes the light) that was able to last 1,200 hours. Lighting has changed over the years but some of the new inventions still were made in the 1800’s. Glassblower Heinrich Geissler and physician Julius Plücker discovered that they could make light by removing almost all of the air from a long glass tube and by passing an electrical current through it. They called it the Geissler tube. In the early 1900’s Peter Cooper Hewitt made the fluorescent lamp. While the Cooper Hewitt lamps were more efficient than incandescent bulbs, no one really used them because of the blue green color of the light. European researchers made neon tubes coated with phosphors (that made the light white). In the mid and late 1930s the U.S. was showing the fluorescent lights to the navy and at the 1939 New York World’s Fair. These lights lasted longer and were about three times more efficient than incandescent bulbs. In 1976, Edward Hammer at General Electric figured out how to bend the fluorescent tube into a spiral shape, creating the first compact fluorescent light
...sed using a spectroscope. Neon is often used in signs because of its production of an unmistakable bright reddish-orange light. Although still referred to as "neon", other colors are generated with the variety of noble gases and by various colors of fluorescent lighting. Neon is also used in vacuum tubes, high-voltage indicators, lightning arrestors, wave meter tubes, television tubes, and helium neon lasers. When Neon is liquefied it is commercially used as a cryogenic refrigerant and the lower temperature range becomes more attainable with more the extreme liquid helium refrigeration. Neon both as a gas and a liquid are relatively expensive for example; the price of liquid neon even in small quantities can be more than 55 times that of liquid helium. The reason for neon's expense is because of neon’s rarity which unlike helium, can only be obtained from the air.
Who would believe that one day a teenager by a lack of money would be able to create the largest company of scented candles in the world? This is exactly how Michael J. Kittredge began his journey as an entrepreneur.
Fluorescent light bulbs pose a serious danger to our health as well as significant risk of contaminating our environment.
Fireflies produce what is called a “cold light” with no ultraviolet frequencies. They produce a light that comes from their lower abdomen that can range in colors such as yellow, green or a pale red. The fireflies take in oxygen and combine it calcium, adenosine triphosphate and luciferin to produce light that contains almost no heat. There are several uses for this light but in most cases it is used for the purpose of finding and catching a mate. Male will flash for every five seconds and the female will flash every two second. There are some fireflies that do not produce light those species are day-fliers such as the Ellychnia, which uses pheromones to signal their mates.
Historically, innovation by individual inventors has completely transformed our economy with the growth of new occupations and organizations. Innovation is a key determinant of a successful society. In the absence of inventors, humans could never have progressed from the times of the cave men. The discovery of light has, since the beginning of time, played a curtail role in the evolution of humans, creatures and plants. Fire, as a source of light, has not only produced new ways for creating and decimating things but it untimely crafted a new lifestyle. With fire, humans could illuminate their surroundings after the sun had gone down. With fire, they could investigate new areas of the world that they had not been able to explore before. Ultimately,
often seen at night because of the many lights that people claim to see illuminating from these
Candles have been used all the way back to 3000 B.C., when Egyptians used torches to see in the dark. The Romans would cover papyrus in beeswax or tallow to see in the church, when traveling and at their residence. In the Colonial times, women found out that they could make candles from bayberry bushes that produced wax. “In 1834, inventor Joseph Morgan helped further the modern day candle industry by developing a machine that allowed for continuous production of molded candles by using a cylinder with a movable piston to eject candles as they solidified” (National Candle Association). In the mid 1850’s, Paraffin wax, which is the main ingredient in most candles today, was invented. It was made with petroleum or oil. It was popular because
In the days before electricity and gas being used now for every day lighting, there was candle light. Candles have been used for centuries to light up areas of a house or for the use I wish to enquire about, foot lighting in theater. The foot lighting was used to light up the stage and more so the character’s playing on it. Though candles have a short radius for lighting capabilities this never stopped any performance, they just used what they had and created an even much more alive scene then than anyone else has been able to create to this day. Even when the switch to gas lighting was being made, some of the great theaters still stuck with candle light because even though it lacked control, candles still gave a wonderful look on and off the stage.
Thomas Alva Edison is a very well-known American inventor. He invented about 1093 devices that influenced us greatly, such as light bulb, microphone, telephone receiver, universal stock ticker, phonograph, kinetoscope (used to view moving pictures), storage battery, electric pen, and mimeograph. Edison also improved many other existing devices as well. In the period from 1878 to 1880, Thomas Edison began serious research into developing a practical incandescent lamp. Edison and his associates worked on at least three thousand different theories to develop an efficient incandescent lamp. In 1878, Edison built his first high resistance incandescent electric light. Incandescent lamps make light by using electricity to heat a thin strip of material (called a filament) until it gets hot enough to glow. Many inventors had tried to perfect incandescent lamps to "sub-divide" electric light or make it smaller and weaker than it was in the existing arc lamps, which were too bright to be used for small spaces such as the rooms of a house.Edison's lamp would consist of a filament ho...
It is known to make the hair shine, the skin glow, and the bones strong and good for the eyes. Two other fundamental substances found in glow foods are fiber and antioxidants. Solvent fiber supports in great assimilation, brings down awful cholesterol and keeps up glucose levels. The cell reinforcements, including vitamins A, C, E and selenium, help the body battle cell harm and reinforce the safe framework.