What is sunlight good for? Vitamin D is also critical for your immune system, and with consistent exposure to sunlight, you can help strengthen it. A healthy immune system can help reduce the risk of illness, infections, some cancers, and mortality after surgery. What hours should you avoid the sun? To avoid sun damage: Stay […]
Why does a single slit cause diffraction?
Why does a single slit cause diffraction? Interference and Diffraction are the phenomena that distinguish waves from particles: waves interfere and diffract, particles do not. Light bends around obstacles like waves do, and it is this bending which causes the single slit diffraction pattern. The slit size is small, relative to the wavelength of light. […]
What is SOP & POS?
What is SOP & POS? The SOP (Sum of Product) and POS (Product of Sum) are the methods for deducing a particular logic function. In other words, these are the ways to represent the deduced reduced logic function. Conversely, POS produces a logical expression comprised of the AND of the multiple OR terms. Why is […]
How many sprinklers can I run on one line?
Is solstice the same as equinox?
Is solstice the same as equinox? While the solstices result in a change of the length of night and day, the equinoxes do not. The summer and winter solstices result in the longest and shortest day of the year respectively while the equinoxes result in an equal amount of daylight and darkness received all across […]
Why do plant cells have chloroplasts and animal cells do not?
Why do plant cells have chloroplasts and animal cells do not? Both plant and animal cells are eukaryotic, so they contain membrane-bound organelles like the nucleus and mitochondria. For example, plant cells contain chloroplasts since they need to perform photosynthesis, but animal cells do not. What are the 4 types of tissues in animals? There […]
What are the 4 steps of the phosphorus cycle?
What are the 4 steps of the phosphorus cycle? Weathering. Phosphorus is found in the rocks in abundance. Absorption by Plants. The phosphate salts dissolved in water are absorbed by the plants. Absorption by Animals. The animals absorb phosphorus from the plants or by consuming plant-eating animals. Return of Phosphorus Back to the Ecosystem. What […]
What are the 2 main types of telescopes?
What are the 2 main types of telescopes? There are two basic types of telescopes, refractors and reflectors. The part of the telescope that gathers the light, called the objective, determines the type of telescope. A refractor telescope uses a glass lens as its objective. Who is the father of astronomy? Copernicus What kind of […]
What tool do you use to tighten nuts?
What tool do you use to tighten nuts? Spanners What happens if a bolt is over tightened? Everyone who has ever worked with fasteners has accidentally messed one up at some point. One of the most damaging ways to do that is by over-tightening, or over torquing the fastener. This can result in stripping screws, […]
What liquids expand freezing?
What liquids expand freezing? Expansion. Some substances, such as water and bismuth, expand when frozen. Does ice expand contract? When you heat ice, the molecules gain kinetic energy, and the ice expands until it melts. But once all the ice has turned to water and the temperature starts rising again, expansion stops. Between 32 and […]