English
What Is the Difference Between Square Wave and Sine Wave Power. Why Should I Be Concerned?

The most efficient inverter is a square wave , not sine wave generator. The reason is that at any given moment, it's either almost perfectly conducting or insulating. Either way, hardly any power is wasted. Most of the time a sine wave generator is partly conducting, which means that some of the DC power going in is wasted as heat, like in a resistor. But square wave inverters have some drawbacks. Not all appliances like them. Draw up a list of which appliances you are going to use it with and ask their manufacturers if a square wave supply is OK. The other drawback to square wave power is that it contains the fundamental frequency and also high frequency harmonics, which cause radio interference. This can cause problems with nearby TVs, radios, cellphones and computers. You can do things to reduce this problem, but it's a complicated subject. My advice is, if the amount of power you need is fairly small, so a little bit of wastage is acceptable, use sine. If power is at a premium, like if you are using a car battery out in the bush, and you have not got fussy neighbours or temperamental electronic gear around, use square 1. Half Wave vs Full Wave Rectifier Circuit?

The wiki link below shows both full and half wave rectification. Just scroll down in the article to see them. The color codes are: 0 - Black 1- Brown 2 - Red 3 - Orange 4 - Yellow 5 - Green 6 - Blue 7 - Violet 8 - Gray 9 - White

2. Is gravitational wave a new category of wave?

I do not like your characterization of the type of waves.In physics there are three main types of wave equations, i.e. equations whose simplest solutions are sinusoidals, fitted to observations. a)Waves on a matterial medium, as water waves, sound waves, the energy is riding on the material in a sinusoidal manner.b)Waves where sinusoidal solutions in space time are fitted to fields carrying energy, where there may be no material medium. These are the electromagnetic waves in spacetime and gravitational waves in spacetime. Electromagnetic waves and gravitational waves can propagate in a medium, but what separates them from matterial waves is that they also propagate energy in empty space.c)Probability distributions , from solutions of quantum mechanical wave equations, as the Dirac and Klein Gordon. These are sometimes mistakenly called "matter waves", which can show sinusoidal distributions. Yes, the discovery confirms a separate type of energy transfer through gravitational waves, which had been predicted by Einstein from the General Relativity equations, and they are a different wave than electromagnetic waves which are predicted by Maxwell's equations 3. What is the effect of gravitational wave on earth?

The dimentions will change that is the length width and height of all objects will change in all measureable scales from atomic scales to the largest objects on earth. That is even if the space between one end of an object being measured is empty the distance measured will change according to the amplitude of the g wave. This will be like compression waves traveling through matter houever they will be felt even if there is no matter to transmit the compression waves. The amplitude of the dimentional changes will be tiny as the gravitational wave effect is dependent on the gravitational constant which is tiny!

4. Wave Equation PDE [closed]

The problem is that odeint solves first-order ODEs of the form \$\$dot u(t) = Au(t),\$\$ but the wave equation is (after discretization in space) a second-order ODE of the form \$\$ddotu(t) = Au(t).\$\$ (And in fact, your plot looks quite reasonable for the solution to a parabolic equation.) To apply a black-box ODE solver (which is really not such a great idea, by the way), you first need to rewrite the wave equation as a system of first-order equations \$\$ leftbeginaligned dotu(t) &= v(t), dotv(t) &= Au(t).endaligned

ight.\$\$At the risk of sounding brusque: Before making more than minor modifications to such code, you should first read up a bit on PDEs to understand what you are trying to solve. A good starting point could be the Appendix E of Randy LeVeque, Finite Difference Methods for Ordinary and Partial Differential Equations, SIAM 2007.

get in touch with us
related searches

Copyright © 2020 Coffee bag - Guangzhou tianci packaging industry Co,. Ltd. |﻿ Sitemap