For the frequency sweep method, the precession frequency is permanent if the applied magnetic field is unchanged and the frequency of the radiofrequency field must be changed for resonance. Therefore, resonance is achieved by keeping the applied magnetic field constant and scanning the radiofrequency transmitter through the continuous variation in oscillating frequency. On the other hand, the field sweep method is achieved by continuous variation in the magnetic field but keeping the oscillating frequency constant. Among the two sweep methods, field sweep method is the most common method utilized in NMR. This is because of the ease of changing the magnetic field than the radiofrequency radiation in order to bring about resonance in nuclei.
The distance from one wave peak to another is known as wavelength, which also can be measured in meters. The number of waves that pass by each second is known as frequency. As frequency and wavelength are inversely related, their multiplication always is a constant, like the speed of light. The position of any specific occurrence of an Electromagnetic radiation on the electromagnetic spectrum is determined by its wavelength and frequency. c=λvc=λv is used to determine the conversion of a wavelength of a
The optimum values for field strength, retention time, power of ultrasound and sonication time were equal to 10 kv/cm, 35s, 185.90 w, 4.47 min, respectively. For the values above-mentioned, the number of remaining E. coli was equal to zero. Finally, to verify the optimal point, the independent variables were rounded down the nearest integer to have practical applicability. Accordingly, field strength, retention time, power of ultrasound and horn sonication time were equal to 10 kv/c, 35 s, 200 w and 5 min, respectively. The amount of reducing the number of E. coli in the laboratory was equal to zero, indicating the accuracy of the method of optimization and
A molecule that absorbs LCP and RCP differently is considered as optically active or chiral molecule. At light wavelengths that can be absorbed by a chiral molecule, Circular dichroism is occur. Absorption may occur at different extents (e.g., 90% of R-CPL and 88% of L-CPL may absorbed by chiral chromophore). The primary spectroscopic property measured by CD spectrometer is the Chirascan. Thus, Circular dichroism measured as a function of wavelength.
The experimental value yielded a result of y = -100x + 10 and the theoretical yielded a -100 V/m. The percent error between the two values was 0.00%. The experiment showed that the theory of the relationship between equipotential lines and electric field lines hold true. Introduction: The objective of this lab was to analyze the nature of electric fields formed by two dipoles and two parallel line conductors using a digital voltmeter. The purpose is to test the theory that states equipotential lines always run perpendicular to electric field lines.
Index 1. Introduction Spectroscopy is a term which refers to the interactions of various types of electromagnetic radiation with matter. It is also a study of the absorption and emission of light and other radiation by matter. Dependence of this process related to the wavelength of the radiation. Spectrometers are used to measure the properties of light over a specific portion of the electromagnetic spectrum.