Monday, March 23, 2020

Kate Essays - Films, Three Colors White, Frdric Chopin, Karol

Kate Chopin And Athenaise In the story "Athenaise," Chopin portrayal of the character Cazeau is almost a direct reflection of the character Karol Karol from the film "White." Both men love their respective wives deeply, but they also realize that their wives do not feel the same. These men have to struggle with the inner turmoil of letting go of the women they love. In the film "White," the director portrayed the change in Karol Karol through the use of flashbacks. Kieslowski uses flashbacks to show us Karol's past. This is done many times throughout the film; the audience saw Karol Karol reflect back to his wedding day as he walked up the steps of the court house on his way to his divorce hearing. This flashback was interrupted when a bird relieved himself on Karol Karol; the author used the bird as a subtle kickback to reality. Kieslowski uses this method many more times in the duration of the film, and as a result he shows the importance of Karol Karol letting go of his wife. Chopin also used flashbacks to show us the change in Cazeau. The character Cazeau is in love with Athenaise, but she like Karol's wife Dominique does not feel the same about Cazeau. Athenaise ran away to her parents house, and Cazeau followed her determined to take her home with him. The flashback occurred on their trip home. Cazeau and Athenaise passed an oak tree on their journey, and this tree triggered the flashback. Cazeau upon seeing this tree recalled a memory of when he and his father were returning a runaway slave to their home. This memory caused Cazeau to feel as if he were treating Athenaise as a slave. The author used the flashback of Cazeau's youth to make the character realize the importance of freeing his wife. Both, Chopin and Kieslowski used flashback as a tool to bring about a change in both Karol Karol and Cazeau. In both stories the husbands loved their wives, but upon remembering a event of their past the husbands both felt that for all to be happy it would be best for them to let go of their love. There is a strong similarity between the way both characters went through their change, and also in the change that occurred.

Friday, March 6, 2020

Atomic Absroption Spectroscopy essays

Atomic Absroption Spectroscopy essays Atomic Absorption Spectrophotometers An atomic absorption spectrophotometer consists of many complex and integral pieces. These components work together to help determine the concentrations of many different elements in various products to a very precise and accurate value. The instrumentation can vary depending on the use the machine is designed for, and the amount of accuracy that is required. There are four basic components of atomic absorption spectrophotometer. They are as follows: a narrow band source of EMR (electromagnetic radiation), the sample compartment where the sample is atomized, a monochromator which is used to isolate the certain wavelength of EMR you are interested in, and a detector which determines how much of the EMR was absorbed scattered by the sample. The most common source used in atomic absorption spectroscopy (AAS) is a hollow cathode lamp (HCL). The HCL has two electrodes, an anode that is negatively charged, and a cathode having positive charge. This charge is a result of a large electrical potential across the electrodes. These electrodes are contained in a sealed glass tube filled with an inert gas such as argon or neon. This inert gas is to prevent the oxidization of the electrodes. The anode is made of tungsten and the cylindrical cathode is made of the element of interest. This results in that a different lamp is required for each element t hat is to be analysis, but it is possible to buy lamps which have cathodes made of multiple materials making it possible to analyze more than one element at a time. The EMR that is created from the lamp is focused on the sample compartment in a fine beam. In the sample compartment the sample is atomized, by either flame atomization or by electro thermal atomization. In the flame atomization the sample is introduced into laminar flow burner where the sample is mixed with the fuel and oxidant and introduced into the flame as a smooth (laminar) flow. The mixture t...