Glow sticks are colorful, fun, and at sometimes helpful in cases because of their luminescence, luminescence is the emission of light by a substance that has not been heated, as in fluorescence and phosphorescence. Luminescence is caused by an object being subjected to an outside source of energy. Glow sticks are composed of diethyl phthalate (solvent), a fluorescent dye, TCPO, sodium acetate, and hydrogen peroxide. The earliest patent says they were invented in June 1965 by Bernard Dubrow and Eugene Daniel Guth. Since 1962, the military has found many uses for glow sticks which are used in; non-tactical military ops, safety, and night operations. Glow sticks are now put in military safety kits to mark things or places at night.
To find chemical equilibrium, the following chemical equation is used in the experiment: Fe3+(aq) + SCN-(aq) FeSCN2+(aq). When iron (III) and thiocyanate react, thiocyanoiron (III) is produced. When the concentration of all ions at equilibrium are known, the equilibrium constant can be calculated by dividing the equilibrium concentration of the reactant by the equilibrium concentration of the products. In this experiment, four equilibrium systems containing different concentrations of three different ion types (Fe(NO3)3, KSCN-, and distilled water) are made and used to determine equilibrium concentrations. The equilibrium concentrations are used to calculate the concentration that all of the components of the chemical equation are at equilibrium. Using a colorimeter or spectrometer to determine the equilibrium concentration of FeSCN2+(aq) and
Describe the main difference between a compound light microscope and a dissecting scope. The main difference between a compound light microscope and a dissecting scope is that a light microscope has a higher resolution and a dissecting scope displays the image in a 3D form.
H. Write up to five sentences describing how a spectroscope works. Make certain to mention things like the light inlet slit, diffraction grating, light, spectrum, etc.
Self image is very important to many teens, but do they know the harm behind tanning beds? Tanning bed users can be exposed to 5 times more UV (Ultraviolet radiation) than they should from natural sunlight. Melanoma is a skin cancer caused by tanning beds. DHA (dihydroxyacetone) is a additive in tanning lotion that darkenss the skin and can cause prolonged bleeding.
Observation is the tool that practitioners use to obtain the necessary information that helps them to plan effectively for each child. Observations are considered to be an important part while working with the children. There are number of reasons why recorded observations are required.
There are a myriad of ways of identifying an element. One of these methods is the study of colors emitted by the element when exposed to an energy source. Flame tests are a fast and reliable method of determining the identity of unknown metal ions. The Flame Test was designed to test different metal ions to observe the colors that each chemical makes. The Flame Test was also used to identify unknown metallic ions based on the color of the flames produced. In this lab, Petri dishes each containing a different metal ion were doused in ethanol and lighted using a lighter. The metal salts each burned a different color in the fire based on the identity of the ion. By placing atoms of a metal into a flame, electrons in an atom can absorb energy from
There is melanoma, the most deadly skin cancer which also happens to be the most common. Just in melanoma there has been more than 3.5 million diagnoses every year. Melanoma is also more commonly diagnosed in girls 15-29 than of boy of that exact age. Indoor tanners have also been diagnosed with other varying types of skin issues. The risks of one receiving one of these issue is drastically increased from only one session of tanning. It is possible to get squamous cell carcinoma, basal cell carcinoma, and immune suppression. There is also eye damage that becomes very possible to get such as cataracts and ocular melanoma. It is also possible to get mental problems also like loss of consciousness and tanning addiction. There is many reasons not to go get an indoor tan and many of these can affect your health and how you look from that time
The observed emission data for the different elements did not look how they were supposed to. However the “peaks” for Hydrogen were found to be 534.52 and 631.24, 534.70 and 569.11 for Helium and 529.73 and 630.71 for Mercury. The Rydberg’s Constant found to 1.1x107 8.5x104 while the known constant is 10967758.34m-1. The percent error of 0.29% and the accuracy of this reading is 99.7. The slope and intercept of the linear regression line is -0.01 3.3x10-5 and 0.02x10-1 1.9x10-6 respectfully.
I completed this collective project in the optoelectronic information laboratory of University of Shanghai for Science and Technology from July to October 2011 when learning the photoelectric detection technology. As the team leader, I completed the project design, team organization, actual operation and other core work.
Commonly known as a “gun type bomb” the Little Boy bomb devastated the city of Hiroshima on August 6, 1945. This was know as the “gun type bomb” because it actually contained a gun inside of the nuclear bomb. This weapon was a big risk for the B-29’s because it was the first ever atomic bomb dropped. Also, the bomb was wide ranged so the pilot who dropped the bomb felt some of the explosion. Little Boy was followed by an explosion of the Fat Boy bomb just three days later south of Hiroshima.
A flash of light shines in through my eyelids and burns my cornea. Muffled barrages and blasts sound through the silent ringing that overwhelms my eardrums. My eyes peel open and I turn my sore neck from side to side, as the blinding whiteness of everything presents me with the world in three. As the contrast in my pupils returns and the pestilence in my ears subsides, the Earth shaking sounds of bombs and bullets parade through my chest. The tremors not only quake in my nervous being, as even the pebbles beneath my feet quiver in the wake of the noise that assaults my senses.The jagged black rocks of the cliffed edge on the beach obtrude into my back, and I painfully roll to my right side. There, clutching the
Age related macular degeneration (AMD) is a disease that causes loss of vision over a period of time. It is a disease that comes on slowly and therefore a lot of times it is just associated as being due to old age. When this disease takes full effect sufferers can lose a large amount of central vision however they usually retain their peripheral vision.
Keratoses are crusty, scaly spots on the skin. They usually develop on the face, ears, scalp, and arms or on the back of the hands, but they can appear on any part of the body, especially if it regularly exposed to the sun. Micro Laser Peel is a treatment to remove keratoses that is more than microdermabrasion but does not require the recovery time of a full skin resurfacing. Our specialist also prescribes Micro Laser Peel for scars, wrinkles acne scars, lax skin and pigment problems. For many patients, the procedure is done two to four times with about six to eight weeks between treatments.
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term "laser" originated as an acronym for "light amplification by stimulated emission of radiation".