Recent content by chrisphd

Perhaps it is some sort of heart block. This would be consistent with bradycardia and an irregular rhythm. Was an ECG performed?

Imagine I am trying to heat water from room temperature to 100 degrees Celsius, with a heating element of constant power. One would expect that for low temperatures, Temperature vs. Time graph to be linear. When I did the experiment, the result however was linear up to about 60 degrees, but...

My intuition would say that it is possible for the final position to approach infinite as n approaches infinite. For example, let's say b = 100000 and c = 1, and p = 90% and say A = 100. There is a 90% chance the walker will move 100000 units further from 0, and then only a 10% chance he will...

Do you know the procedure for finding expectation value once I've determined a transition matrix?

Not sure how I could use Markov chains because the transition matrix would have infinite dimensions.

I am interested in the following random walk scenario, where a walker starts at a defined position greater than 0, say A, and then makes a "decision" to walk to either walk "b steps to the right" or walk "c steps to the left." He will choose the first option with probability p, and the second...

Suppose it is known that a photon has diagonal polarisation (e.g. it has just passed through a diagonal slit), then Alice comes along and measures the photon using a horizontal/vertical polarisation basis. So, I believe there is a 50% chance she will get a horizontal result and 50% chance she...

let x be distance along 1st segment, and y be distance along 2nd segment. x and y are both random and independent, so we can treat them as a pair (x,y). How do we work out the possible values of (x,y)? Draw a graph with x-axis and y axis, up to x=30 and y=30. All coordinates in this range...

Consider a line segment of length 60cm, divided in half (30 cm/half). A point is randomly chosen from the first half of the line segment, and another point is randomly chosen from the second half of the line segment. What is the probability that the distance between the two points is less than...

Ok thanks for clearing that up.

I'm not an expert, but I think that in the standard model, in the weak interaction, charge is uncertain due to CKM mixing. That is, weak interaction eigenstates are superpositions of the strong interaction eigenstates. The strong interaction eigenstates have definite charge (are eigenstates of...

Maybe it gives that impression however that isn't what I intended. I state that the equation Opsi = o*psi can be solved for o and psi. Meaning that the possibilities of o and the possibilities of psi are both dependent on O. That is, I am not saying that for any given psi, that the equation...

If the wavefunction isn't an eigenfunction of the operator O, then Opsi will not equal o*psi. That is, Opsi will not be simply a number multiplied by psi. Therefore only eigenfunctions can be solutions to the equation Opsi = o*psi. In fact, this forms the definition of the eigenfunctions of...

Do you think it is possible to complete a PhD in theoretical physics in just one year, since no experiments have to be done?

It sometimes requires a lot of thought to work out what direction the force is, that is acting on the body. Consider the forces on the elevator. The force of gravity is clearly downward, so that is negative. The rope is pulling the elevator upwards, so the Tension must be positive. The man...