Northern Lights

with the emission of a photon. According to Seitz (2006) found in the Credo referencing database, “Photoluminescence excitation spectra are determined by measuring emission intensity at a fixed wavelength while varying the wavelength of the incident light used to produce the electronically excited species responsible for emission. The excitation spectrum is a measure of the efficiency of electronic excitation as a function of excitation wavelength. Photoluminescence emission…

How does light filtration affect the rate of photosynthesis? Introduction: Photosynthesis is an essential process plants use to convert light energy from the sun into chemical energy, released as glucose. Some of the limiting factors of photosynthesis include temperature, amount of light, the concentration of carbon dioxide, availability of water and the concentration of chlorophyll. Fig.1- The word and symbol equations for photosynthesis. The aim of the practical is to model the rate of…

Acoustics is the branch of physics concerned with the study of sound. Sound is a wave made of vibrations in the air. Waves can be measured in a range of different ways: by their amplitude, wavelength, frequency, speed, and, at times, their phase. Sound information is transmitted by the amplitude and frequency of the vibrations, where the amplitude is experienced as loudness and frequency as pitch. The vibration is started by some mechanical movement and this causes a vibration on the molecules…

Marie Curie A glowing particle of radium sat in the dark with all of its pitchblende dirt particle buddies. A sliver of light was let in by the almost shut door, and as the sliver grew bigger, the shadow of a woman appeared on the ground. Marie Curie stepped into her lab, and began to gather the tools she needed. She picked up the little jar of pitchblende and brought it to a workstation and began sifting through it. The footsteps that had been working their way to the door finally reached it…

“The lake was very calm. Above, a bright summer moon provided unlimited visibility. Suddenly, just a few feet offshore, the surface parted with a swelling roar of angry water as a serpentine head reared high, swaying from side to side and leering with great red eyes” (Moffet 3). Since Bear Lake Valley was developed, stories of the Bear Lake Monster have circulated campfires, fishing boats, and cabin living rooms. These stories bring communities together. The people of Bear Lake bond over stories…

Hue, Saturation, and Intensity are represented as HSI in HSI colour model. The HSI model is used as an alternative to, or alongside the RGB representation. In this model, the hue of a colour is its angle measure on a colour wheel. Pure red have hue value as 0°, pure green have hue value as 120°, and pure blues have hue value as 240°. Neutral colours like white, grey, and black are set to hue value 0° for feasibility. Intensity is total brightness of the colour and also defined numerically as the…

 Introduction.  Parts of light microscope.  Steps to setup light microscope.  Uses of light microscope.  How to clean light microscope.  Maintain the light microscope.  Summery.  References. Introduction. Light microscope is an instrument which used to magnify small specimen which cannot be seen through naked eye, by using a light source. It helps to magnify the small object to 1000* times than the real size of the real object. In light microscope light ray is send and it…

the central area. In order to fuse the powder on top of the previous layer without thermal distortion the entire bed is heated below the melting point of powder by infrared heaters. Then the powder is sintered into preferred shape by using CO2 laser light that has enough power. After sintered part is cooled for sufficient time, the bed part is lowered by a thickness of a one layer and roller spreads a new powder layer. This process is repeated layer by layer until the entire product is…

After the last supper was made by Devorah Sperber. The art work was made in the year of 2005 and was placed in a museum in The United States, New York City. The art work was an Inspiration of Leonardo da Vinci of his artwork The last supper. The artwork that is made by Dvorah Sperber, was made with 20,736 pins of thread that are attached to an aluminum ball chain. Ironically, our eyes and our brains conceive and read things just like what Devorah Sperber is trying to show us. When we, humans,…

For my experiment, I choose to use both the red and green color lens filters. I initially was going to select blue, but when realizing it did little alteration apart from making white appear brighter I opted for a red and green filter. Like both my mother and father, I have Deuteranomalia which means I have a difficult time discerning from reds (appearing more brown) and greens (appearing more yellow). While my father has deuteranopia meaning his green cone is missing, I suffer from…