Recent content by Elliptic

Which one of these smartphones is the best? Samsung i8262 Core vs Sony Xperia M vs HTC Desire 500 Dual SIM I looked all specifications and i think HTC is first choice.

Sony 32R420 vs Samsung UE32F4000AWXXH They have similar, almost same specifications. But Sony is a little bit expensive. I need advice about specifications and which of them is better in picture reproduction and other specification.

Any help?

If I strart from this point: ## B_{\mu\nu}+\lambda g_{\mu\nu}B=0 / \cdot g^{\mu\nu} \\ R(1+4\lambda)=0 ## what next?

Homework Statement Find the equation of scalar curvature for homogenous and isotropic space with FLRV metric. Homework Equations ## R=6(\frac{\ddot{a}}{a}+\left( \frac{\dot{a}}{a}\right )^2+\frac{k}{a^2}) ## The Attempt at a Solution ##G_{AB}=R_{AB}-\frac{1}{2}Rg_{AB}##

Thanks. I have another problem, but i must respect the rules of forum and post a new thread.

That Riemann curvarue tensor is equal to zero?

## \Gamma^{K}_{MK}=\frac{1}{2}\left(\partial_Mg_{ML}+\partial_Ng_{ML}-\partial_Lg_{MN} \right ) ##

Homework Statement Show that all components of Riemann curvarue tensor are equal to zero for flat and Minkowski space. Homework Equations The Attempt at a Solution ## (ds)^2=(dx^1)^2+(dx^2)^2+...+(dx^n)^2 \\ R_{MNB}^A=\partial _{N}\Gamma ^{A}_{MB}-\partial _{M}\Gamma ^{A}_{NB}+\Gamma...

Is there any serious work with calculations and explanations about this topic? Any references? I know that that digital watch is a combination of physics(piezoelectric effect) and logic, but i need to know much more.

1. I have problems finding the truth of this statement. The statement is cited from "book". I want to draw your attention to the following words: electron is decelerated 2. Statement: "Bremsstrahlung X rays result from Coulomb interaction between the incident electron and the nuclei of the...

I recorded statical characteristic for sc diode 1N4148 at T=300K. How to determine operating point of diode and plot both in matlab?

how to display two plots plot1 and plot 2 in one graph? thank you

I have a set of measured data. I need to plot this in MATLAB and show two graphs in one plot. Data for first graph is : [0.35,0],[0.4,130],[0.45,400],[0.5,0.11],[0.55,34] and so on. Second graph is a function. So, how to plot sequence of data in matlab? Which command should I use?

Energy gap dependence on temperature for intristic semiconductors (Si,Ge) I need help on this topic, where to find text about this, and models that describe it (Varshni's model, linear model,...)