05/5/14

what is glowstick

glowA glow stick is a sheer plastic tube that produces a brilliant light. A glowstick is also known as glow tube or light stick or glow light stick.

A glow stick is typically a plastic cylindrical rod about four or five inches (10 to 13 cm) long and less than an inch (2.5 cm) in diameter. The transparent stick contains two chemical fluids in two different compartments. The outer compartment of the tube carries one chemical fluid and the inner compartment carries the other. The inner compartment is brittle either made of glass or brittle plastic.

The inner brittle part breaks on bending the glowstick and helps inter mingling the two chemical fluids. A fierce chemical reaction takes place emitting bright light but not necessarily heat.

The glowsticks are used in the military, recreational driving at night, marching bands at night, entertainment parties, raves, concerts, dance clubs, Halloween eves etc. The glowsticking is the use of glowsticks in dance.
Chemistry:

The phenomenon of the chemical reaction in the glow sticks is known as “chemiluminescence”. The chemicals used to create the reaction in glow sticks are usually hydrogen peroxide and a mixture of phenyl oxalate ester and the fluorescent dye. The fluorescent dye gives the glow stick its color.
The outer compartment of the tube contains a mixture of the dye and a derivate of phenyl oxalate ester (cyalume) and the inner brittle part contains concentrated hydrogen peroxide.
A ferocious reaction takes place on mixing the peroxide with the phenyl oxalate ester. The ester is oxidized, giving out 2 molecules of phenol and 1 molecule of peroxyacid ester. The peroxyacid decomposes spontaneously to carbon dioxide, releasing energy that excites the dye that then de-excites by releasing a photon. The wavelength of the photon depends on the structure of the dye.

Different dyes can be used to produce different color lights. The 9,10-bis (phenylethynyl) anthracene gives green light, 9,10-diphenylanthracene emits blue light, 5,6,11,12-tetraphenylnaphthacene emit red light. The glowsticks dyes usually emit fluorescent light when exposed to ultraviolet radiation. Therefore even a spent glowstick shines under a black light.

The other chemicals used in glow sticks may include sodium salicylate as a catalyst, bis (2-ethylhexyl) phthalate (DCHP) as a solvent, bis (phenyl) oxalate, bis (2,4,5-trichlorophenyl-6-carbopentoxyphenyl) oxalate (CPPO).

The chemical reaction gets accelerated on heating a glow stick and the glowstick glows brighter, but for a shorter span. The cooling on the contrary decelerates the reaction that helps a sick glow longer, but dimmer.

05/5/14

Types of glowstick

T1vbzfXmdbXXcsjM2X_115327Fun Glow Sticks

These are normally purchased by parents for their kids to play with at home or for celebrations. They come in multiple colors and are great fun to play with especially at night. So whether you are planning a surprise birthday party for your kids or for friends, be sure to get a pack of these. You won’t have any trouble finding out where to buy glow sticks as they can be purchased online. Some store may even throw in free shipping if you buy above a certain amount. And they are good to use for any public holiday celebrations when you just want to bring your kids out for some fun in the park or beach. Do remember to check the glow duration before purchasing them.

Concert Glow Sticks

Who does not like concerts? We love those outdoor performances by accomplished musicians and popular singers. If you are a big fan of any popular musical artist, you will know how exciting it is when you attend any of their evening concerts. The type of glow sticks that you will want to use would be long ones so that you can wave them around clearly during the performance or during certain songs that you love. Imagine a sea of fans all waving colorful glow sticks at night when the music plays and singer sings. How cool would that be? Get a few of these to share with your friends who are going to the same concert as you are.

Safety Glow Sticks

The other type would be safety glow sticks. These are different in quality from the normal fun ones since they are used for rescue missions. Or people who love to go caving will be sure to purchase some of these. They glow brighter and tend to last longer. You could also get a few of these for your homes for emergency situations when there us a blackout. That way, you do not have to worry about lighting candles or fumbling around looking for your torch light and batteries. In fact, some people even keep one or two of these in their cars. They will come in very useful.

Article Source: http://EzineArticles.com/6510756

05/5/14

Useful Emergency Item

cyalume-chemlite-lightstick-6-inch-12-hour-in-use-mcguire-army-navy-military-surplus-gearNobody wants to think that a natural disaster or sudden tragedy will affect their lives but unfortunately in this unpredictable world it is a possibility that should not be ignored. Emergency preparedness could mean the difference between life and death when catastrophe strikes. Natural disasters like hurricanes, tornadoes, landslides, blizzards, or earthquakes leave you with little or no time to prepare, and if the neighbourhood or even city you are living in is facing the same dilemma you will have no one to turn to for help. Many people store an emergency food and water supply in their homes in case a disaster hits. But in the case of a flood or earthquake there may not be enough time to reach the supplies, or the supplies may be destroyed before you have the chance to retrieve them. That is why emergency backpacks are a good idea. They are easy to grab and to take with you if you need to leave the home quickly. They are also easy to bring along with you when you go camping or on long road trips. It is a good idea for every member of the family to have their own survival backpack in case you become separated during a disaster. While apart you will each be able to survive on your own until you are able to reunite with one another. There are many quality survival backpacks available online or in stores. These ready made backpacks are put together by survival experts and usually contain 72 hours worth of supplies. Having emergency survival packs nearby will give you a sense of safety and security because you will know that you are prepared if tragedy happens to strike. You can also choose to make up your own Emergency Survival Backpack, but make sure you do the research necessary to find out exactly what your backpack should contain. There are different variations of Survival Backpacks but every emergency pack should have the basics such as food, water, and a first aid kit. If you are building your own survival pack the following list of 15 items will give you an idea of the essentials your backpack should hold.Dried food and high calorie food bars. Water pouches and water purification tablets.Tube tent.Warm clothing and leather gloves.Solar blanket and rain poncho.Comfortable walking shoes or boots. Waterproof matches and lighters. Utility knife and rope . Whistle and flares. Dust masks.Fully loaded first aid kit. Flash light with extra batteries and light sticks.Battery operated or wind up AM/FM radio. Personal necessities such as toilet paper, soap, hand sanitizer, etc.A list of your medical history including any health problems and medications you take to help emergency medical responders treat you properly.