Explain how laser light is produced.
What will be an ideal response?
A laser is a form of light that is monochromatic, a single color wavelength, that travels in parallel waves. This form of light is generated when certain types of materials are excited either by intense light or with an electric current. The atoms or molecules of the lasing material release their energy in the form of light. The laser light is produced as the atom or molecule slows down from a high-energy state to a lower-energy state. The laser light is then bounced back and forth between one fully reflective and one partially reflective surface at the ends of the lasing material. As the light is reflected, it begins to form a synchronized wave form. The light that passes through the partially reflective mirror is the laser light, and it is ready to do its job.
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a. NEC® Sección 370.16. b. NEC® Sección 220.5. c. NEC® Sección 501.4. d. NEC® Sección 430.6.
The process of heating milk to a high temperature for a fraction of a second is called ____________________
Fill in the blank(s) with correct word
It has been found that continued, repeated application of an organic toxin to a particular soil will ________ the capacity of that soil's microflora to degrade the compound in question
A) gradually inhibit B) gradually enhance C) have no effect on
A four-pole, three-phase induction motor drives a turbine load. At a certain operating point the machine has 4 percent slip and 87 percent efficiency. The motor drives a turbine with torque–speed characteristic given by TL = 20 + 0.006?2. Determine the torque at the motor-turbine shaft and the total power delivered to the turbine. What is the total power consumed by the motor?
Find: a) Torque at the motor-turbine shaft. b) Total power delivered to the turbine. c) Total power consumed by the motor. Assumptions: Motor run by 60-Hz power supply