Electromagnetic spectrum

Synthetic Dye Assignment Dye: Sunset Yellow FCF Caitlin Walker Sunset Yellow FCF, more commonly known as Yellow 6, is an orange azo dye3. This dye is petroleum-derived and its absorption is dependent on the pH. Minimum absorption occurs at 480 nm with a pH of 1 and maximum absorption occurs at 443 nm with a pH of 13. Sunset Yellow FCF is soluble in cold water2. Sunset Yellow FCF has the following structure (Figure 1). Sunset Yellow FCF is commonly used in food, cosmetics, and drugs. It is…

The pattern of dim lines and hues made when electromagnetic vitality, for example, light, goes through a substance and energizes its molecules. The energized iotas radiate vitality as light. Since every kind of iota emits light having an extraordinary scope of hues, the emanation range can be utilized to decide the substance 's concoction organization. An outflow range is an electromagnetic radiation (EMR, for example, obvious light, a substance discharges. Each component emits a novel unique…

This lab module covers the subjects of optical spectroscopy of gas discharges and bond stiffness of materials. Optical spectroscopy can be observed using different types of equipment, such as, a spectrometer, a light collecting fiber, and tubes of certain types of gas (He, H2O, H2 and O2). The data collected displays the peak wavelengths for each of the gases, which can be used to determine the energy released when the electrons change energy levels. Overall, it was interesting to see how…

Photoacoustic spectroscopy (PAS) is a tool to study thermal emission resulting from non-radiative relaxation followed by absorption of radiation. PAS was studied primarily by Alexander Graham Bell, John Tyndall, Wilhelm Rontgen and Lord Rayleigh in 1884. For the history of PAS, was not until 1975 that photoacoustic spectroscopy started to be used as a wide range of different applications. This technique provides the following main advantages over the known types of spectroscopy. The advantages…

Electrical Properties AC Conductivity, Ac Resistivity, Dielectric loss, and Dielectric constant are electrical properties and measured as a function of frequency. AC Conductivity and Resistivity AC resistance (ρac) was recorded by LCR meter model 4275 in the frequency range 1MHz to 3GHz. AC conductivity was determined by using the value of Ac resistance. As we know, Ac Conductivity is reciprocal of Ac resistance can be calculated by the relation; ac =1/ρac (6) The variation of AC…

was the most influenstic parameter in this microwave spectrum. The loss factor values increased as a function of frequency and slight modification in spectrum on changing the solute concentration. The ε˝ values obtained in our experiments are almost similar to our earlier work[43]. Above 8GHz the frequency dispersion spectrum of ε΄& ε˝ were superimposed with each other. The spacing between the dielectric values in dispersion spectrum could be attributed to the relative percentage…

Answer: Question 1 (a) Energy Energy Energy Band gap Band gap 0 0 0 (i) Insulator (ii) Semiconductor (iii) Conductor Diagram 1: The energy band The differences between insulator, semiconductor and conductor. Insulator Semiconductor Conductor It has a large band…

4.0 Results and Discussion Before the strontium quantification of the solutions resulted from the ion exchange experiments, it was necessary to investigate what is the range where strontium absorbs radiation linearly and what is the detection limit. The graphs below show the absorbance (atomic absorption) in function of the strontium concentration and it can clearly be seen in figure 2 that at concentrations above 10 ppm the samples start to present non-linear absorption. Therefore, all the…

The development of simple methods for generating molecular complexity with defined stereochemistry from easily accessible starting materials became significant and fascinating over last few decades. A simple methoxyphenol is found to be most appropriate precursor for generating wide range of complex cyclic and acyclic architectures. Several chemical1-5 and electrochemical methods6 have been used for the umpolung of electron-rich nucleophilic 2-methoxyphenols and 4-methoxyphenols to electrophilic…

Radiation is defined as emission of energy in the form of x rays and gamma rays. It is transmitted from one place to another. Ionizing radiation is high energy waves that pass the body's tissue, that produces positive and negative charged particles. These high energy waves remove electrons from atoms and cause an interaction between the x rays and the patient. This process is referred to as ionizing radiation. The amount of energy acquired from ionizing radiation is absorbed into the patients…