Try this:

A. Pick any 4 digit number with at least 2 digits that are different. This is your starting number.

B. Arrange the digits of the number from highest to lowest, to get a new number.

C. Arrange the digits of the original number from lowest to highest, to get a new number. Leading zeros are allowed.

D. Subtract the number you obtained in step C from the number you obtained in step B to get a new number. This is your new starting number.

Repeat steps 2, 3 and 4 for a...

Interesting numerical games]]>

I want to approximate my impulse with a 14 keV gamma ray (photon) emitted by iron-57 when it transitions to its...

Can you transmit an impulse through free space and does it travel as sinewaves?]]>

Can we change history so that the present and future will be changed too? ]]>

It is needed to find left or right inverses to non-square matrixes.]]>

So

1. Is a water...

Twenty questions with James R]]>

So how do you relate that to the way surface waves propagate in water? Or a steel guitar string?]]>

All light is made up of photons, the indivisible packets of energy which makes up the basis of quantum theory. However, although light can...

Does quantum mechanics mean everything is quantised?]]>

1. Measure the tested object's length at rest, the value l0.

2. Put this object in motion.

3. Measure the object's speed, the value v.

4....

How to test length contraction by experiment?]]>

Apparently if a Premier League Club achieves thirty-eight points, they are guaranteed to stay in England's top-flight. How is this worked out? Given that it's three-points for a win, one for a draw, and zero for a loss, what is the equation to discover the minimum value needed to stay up?]]>

Yes there is a nod to Douglas Adams

https://www-sciencealert-com.cdn.am...of-three-cubes-problem-has-been-solved-for-42]]>

Given that we tend to find individuality pretty much everywhere, it would not be surprising to me if we find for example that every electron is a bit different from others (i.e. no absolutely identical electrons exist).

Lets hypothesize this is true, how would this affect the fundamental interpretation of...

question for physicists-are all electrons the same?]]>

To be an inertial observer during some period of your life, do you have to be a PERPETUALLY inertial observer? I.e., is it required that you must NEVER have accelerated in the past, and that you can guarantee that you will NEVER accelerate in the future?

Or, can you be an inertial observer if it has been long...

When Does an Observer Become an Inertial Observer?]]>

But what you can say about some part of the world--any part--is that, given the part is finite in extent, over some interval of time there will be changes that can be recorded. And you can say there is an initial state and a final state, ignoring all the information about changes in between.

In fact, recording all the information is equivalent to having a copy of everything that can be known about changes...

The connection between time and information]]>

Any one?]]>

First, I wrote:

The MCMIFM (the Momentarily Co-Moving Inertial Frame Montage) is the uniquely true and meaningful reference frame for the accelerating observer, because it is the ONLY reference frame that agrees with the observations and first-principle calculations that he himself can make. [...] My CADO reference frame is completely equivalent to the MCMIF.

Then, I wrote:

I've given...

A Simple Example, and a Test]]>

If time is basically the measure of change, and if there is no energy then there is no change, would it be safe to assume that within a system absent of energy, Time wouldn't exist? (In this hypothetical scenario, there are no quantum fluctuations)

What are your thoughts?]]>

Motion Mountain Free Physics Textbook

Free for download in pdf.

Physics/Math References]]>

Is Entropy , represented in math by S , the number of ways a system can change ?

If not , what it is ?

Thanks in advance .]]>