How is a spectrum obtained in NMR spectroscopy? A. Low-frequency radio waves bombard the atom and cause nuclei in a low spin state to move to a higher spin state. B. High-frequency ultraviolet rays bo Why does atomic spectroscopy not illustra...
11K Transistors, diodes, and semiconductors are often small parts that play large roles in the function of electronic devices. Learn the properties of semiconductors, transistors, and diodes to see how they contribute to the flow and regulation of electrical current. Related...
(CR), discuss the impact on both image quality and patient radiation dose of the following: (i) X-ray tube kilovoltage (ii) mAs (iii) focal spot size (iv) anti-scatter grid characteristics (v) image matrix size b X-rays are produced at the anode of the X-ray tube by two ...
How do electromagnetic waves carry information? Why can electromagnetic waves travel through a vacuum? Describe the relationship between wavelength and energy in the electromagnetic spectrum. Are infrared rays ionizing radiation? Explain the x-ray emission spectrum. ...
At Cambridge University in the 1950s, Watson and Click tried to make models by cutting up shapes of DNA’s parts and then putting them together. In the meantime, at King’s College in London, Franklin and Wilkins shone X-rays at the molecule(分子). The rays produced patterns reflection ...
Summarize how ultraviolet (UV) light works to control microbial growth and explain how X-rays and gamma rays are used as physical control agents. Explain how ppGpp contributes to the regulation of stringent response genes. Explain how these electrical currents of EPSPs and...
Explain how x-rays are produced when an electron beam falls on a metal target. Why does platinum not affect the potential of a cell if it is at the cathode instead of the anode? How can polyproline form a collagen-like helix? Explain. Under what conditions will the vitamin become ...
Describe how the band structure of a solid can be built up by continually adding atoms (i.e., the addition of more wells).Crystal Structure:A crystal structure refers to the regular, repeating arrangement of atoms, ions or molecules in a ...
Describe alpha, beta, and gamma rays. What exactly is each ray composed of? What are their characeristic radiation characteristics? What are the properties of thermal radiation? From which atmospheric layer of the Sun did the photons originate that ...
Describe how it works. Lenses: In optics, the lenses are the device which is used to converse or diverse the light. Conversing means focused the light, and diverging means dispersing the light rays. There are two types of lenses one is a concave lens (whi...