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

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 .]]>

What is the point of needless science that costs millions and is plain for all to see that it is a waste of time?

Who sanctions such rubbish science ?]]>

Okay, so recently I bought a ring online, and normally, I wear a size 5. Well, they were out of that size, so I purchased a 5.5. In looking at a ring size chart online, a size 5 ring is 15.6 mm but a 5.5 is 16.0

Just by eyeballing the two, it looks like it should be fine, but my question is how do you figure out the inside diameter of a ring?

(Edited, because I sorted out my original two-part question)]]>

There are two (or more) problems afflicting model yachts. To counteract the sideways torque of the wind in the sails requires a deep keel. A deep keel causes drag and launching a boat with a deep keel requires venturing into the water beyond wellington depth.

The design aim is to eliminate the deep keel.

Sooo.. we look at mounting a gyroscope with the rotating bit in the horizontal plane. With a single gyroscope...

Model yachts and gyroscopes]]>

Are atoms some form of cold fusion ?

Thanks in advance .]]>