What is the advantage of PIN photo diodes? Advantages and Disadvantages of PIN Photodiode The advantage is its high-frequency response and its frequency response is also greater than Cadmium – Sulphide photodetector. It is inexpensive and the response time is in nanoseconds which make it appropriate for electronic circuitry. What are PIN diodes used for? […]
How do huge stars die?
How do huge stars die? All stars eventually run out of their hydrogen gas fuel and die. When a high-mass star has no hydrogen left to burn, it expands and becomes a red supergiant. While most stars quietly fade away, the supergiants destroy themselves in a huge explosion, called a supernova. Why do most stars […]
What is the smallest electromagnetic wave?
What is the smallest electromagnetic wave? Gamma Rays Is the electromagnetic spectrum infinite? In general the frequency spectrum for Electromagnetic (e.g light, radio, etc) is continuous and thus between any two frequencies there are an uncountable infinity of possible frequencies (just as there are an uncountable number of numbers between 1 and 2). What does […]
Can you turn off a electromagnet?
Can you turn off a electromagnet? Re: Turning off electromagnet Use a relay. Wire the electromagnet to the relay’s normally closed pins, then run current through the pushbutton switch to the relay coil – when you push the switch, it’ll pull the relay the other way and the electromagnet will shut off. How do you […]
What are the two main studies of physical science?
What are the two main studies of physical science? In this lesson, we will discuss how physics and chemistry are considered to be the two main branches of physical science. We will also look at the overlap between physics and chemistry. What are the issues in science education? Some of the complex issues in the […]
What front usually happens and is over quickly?
What front usually happens and is over quickly? Occluded Front Because cold fronts move faster, the cold front is likely to overtake the warm front. This is known as an occluded front. At an occluded front, the cold air mass from the cold front meets the cool air that was ahead of the warm front. […]
Why incandescent bulbs are better?
Why incandescent bulbs are better? Incandescent bulbs cost much less than their energy-efficient alternatives – mainly CFLs (compact fluorescent lamps) and LEDs (light emitting diodes). Incandescents are inefficient – 90% of the energy goes toward heat and only 10% toward light. Incandescents also don’t last as long as CFLs and LEDs. What are the disadvantages […]
Can water cycle work without the sun?
Can water cycle work without the sun? Water constantly moves around the Earth and changes between solid, liquid and gas. This all depends on the Sun’s energy. Without the Sun there would be no water cycle, which means no clouds, no rain—no weather!” “And without the Sun’s heat, the world’s oceans would be frozen!” added […]
What are the best electrodes for electrolysis?
What are the best electrodes for electrolysis? Steel and iron are the most commonly used for electrolysis of water. These electrodes are used as anode and it is sacrificed in electrolysis, as the anode rusts (get oxidized) and the cathode de-rusts (get reduced). What factors affect rate of electrolysis? There are many factors that affect […]
What is an example of emergent literacy?
What is an example of emergent literacy? Examples of emergent literacy activities include engaging in shared storybook reading, pretending to write or draw, incorporating literacy themes into play, and engaging in oral wordplay such as rhyming. Parents read to children who are very young before they can verbally participate. What are the 5 pillars of […]