Let us get rid of electricity from the face of the Earth...

------------------------------------------------------------

Graphene micro size bubbles with helium gas in them and their surfaces coated with magnetic layer.

These tiny bubbles stick to each other to form a cloud of a large size.The cloud is designed to stay at the ground level.This is an electrically superconductive...

Let us get rid of electricity from the face of the Earth....]]>

When doing measurements of earth resistance using fall of potential method, the normal procedure is to feed all results into an app. This app will generate a curve, based on the measurements and then it will output a reference distance in meters and also an estimated resistance for that particular distance, and it's supposed to also be actually measured at the reference distance (the measured results are normally very close to the estimated).

This is all good. But the problem is : Is...

Fall of potential - how to calculate reference distance manually]]>

I have been examining Open Circuit Time Constants (OCTC) from a text book, and then the next section is on Short Circuit Time Constants (SCTC). For SCTC, the discussion is on the lower frequency cut off due to the zeros, and refers to a text (book) that I don’t have.

I am unsure why, but the book text than refers to the zeros as poles. I searched and located this text ...

Short Circuit Time Constants (SCTC) Use of Pole Instead of Zero]]>

Hex string checksum]]>

I did all of the steps with the sin(t-t0) and jcos(t-t0) and also the y2 = x1 (t-t0). But i cant seem to be able to finish the analysis. Could anyone help?]]>

I want to post it here so that someone can guide me so as to get the roots.

I'm not sure if it is the right platform for Mathematica code related questions, but since I'm doing it for Physics hence I'm putting it here.

Code dot - [expand] 1 *Subscript[\[CapitalOmega], 1][Subscript[\[CapitalOmega]...

How to find the real and imaginary roots for a complex polynomial?]]>

Here is my code:

Code:

```
syms Vs(x) w l C phi Vcc Vr
q= 1/(w*sqrt(l*C));
ode = w*w*l*C*diff(Vs,x,2)+Vs==Vcc-Vr*sin(x+phi); % non-homogenous second order DE
Vs =...
```

consider y=x^3, which is a non linear function. How is dy/dx=2x^2 a linear differential equation? Sorry if it is too elementary]]>

Code:

```
A = [ 1, 2, -1, -2, -3;
2, 4, 0, -3, -1;
1, 2, 1, 0, 1;
3, 6, -2, -5, -7;
2, 4, -3, -5, -8]
b = [6, 7, 2, 16, 14].'
```

rank(A)=3

det(A)=0

So A*x = b does not have unique solution.

Solution x is x = d + t1*c1 + t2*c2.

Here

d = [5, 0, -3, 1, 0].'

c1 = [-2, 1, 0, 0, 0].'

c2 = [2, 0, -3, 1, 1].'

t1 and t2 are any values.

How can I get this solution by MATLAB ?

Solution by pseudo inverse matrix of A gives following.

Code:

```
pinv(A)*b
=>...
```

I am implementing the Quine-McCluskey algorithm, and I cannot solve it. The Quine-McCluskey algorithm is used to minimize digital port circuits. The last piece of algorithm in particular is difficult for me to implement. Can documentation be obtained somewhere in the form of a flow chart or structogram? Or can someone help me implement the final part? I am also looking for documentation for implementing the Petrick's method, also for the same purpose. I look forward to a...

Quine-McCluskey & Petrick's method Project]]>

i would be thankful if you help me to find how to calculate ib of this PNP ??]]>

What about photons that are coming in from the Sun?

As far as I can see, incoming photos would also collide with some of the CO2 molecules.

So why does more heat come in than goes out? Any assistance will be appreciated.]]>

Is there a paper or person out there who has looked at the low order harmonics resulting from the 5 pulse approach and the spacing of the pulses and relative width at full power for lowest harmonic magnitude for the lower order harmonics? - particularly the 3rd, 5th, 7th, 11th, maybe the 15th

I guess I will be doing this from scratch from 1st...

Multiple pulse width ( 5 pulses ) inverter and lowest low order harmonics]]>

It seems to me that fundamental electric theory is no longer taught in school, which is a shame as it results in everyone having their own intuition and interpretation about it, leading to silly and time wasting discussions which everyone would be better without.

In an attempt to rectify this, I have found a youtube video that discusses the Poynting Vector in a correct but rather youthful manner, I suggest that try to...

Energy doesn't FLOW the way you THINK! (Electrodynamics)]]>

1) Can the fermi level of metal change when it makes contact with the Semiconductor ? What assumptions do we make in ideal situation ?

2) Is the Schottky Barrier in Metal Semiconductor contact remains constant with an applied forward or reverse voltage ?

3) On what reasons, do we say that the metal semiconductor junction is forward biased when applying positive on the metal side and negative at the semiconductor side, since both have electrons as a majority...

Metal Semiconductor Contact]]>

I am reading Robert Pierret book and it says that as long as we have a low level injection case i.e. when Vapplied is less than Vbuilt in, this is a case of low level injection -how ? and therefore no voltage drop across the quasi neutral regions - how ?

Thank you.]]>

1) General Question: Why thin charge sheet on the metal side ? Is it because positive bias on metal side will attract the electrons leaving immobile positive ions at the metal -oxide interface ? If yes then why not we get this thin charge sheet at surface of the metal where we have the positive bias ?

2) Figure a) and b) are the cases of strong inversion. Figure b)-For high frequency signals, electrons at the semiconductor oxide interface do not get enough time to change ( I...

Metal Oxide Semiconductor in strong Inversion]]>