Recent content by Hellmut1956

@PlanetGazer8350: I can very much identify myself with the kind of activities you are pursuing and why! I am now retired and to keep me busy and to have my days properly organized and to satisfy my curiosity I do exercise the muscle between my ears! I started to reactivate my hobby from my days...

My question is if we know the rate of change the causes have to the behaviour of the universe expansion. I know that my question consists of quite a number of "sub-questions" so I try to explain myself. 1. In the moment of the Big Bang the universe had the size of a "mathematical point" and...

Dear young friend. I did share your interest in physics and I was not bad at school. i think the way the Khan academy proceeds in physics is a good option and I would be you, I would follow their path. The same applies to mathematics. So far to the rational way to proceed. Emotionally physics...

What was written in this thread about assembler code versus compiled code to my believe does not touch an equally critical argument for compiled programming. Modern processor architectures have multiple caches, do preprocess instructions, does pre-execute code based on assumption of the most...

I can tell you to look for the courses of Calculus Single Variable and Calculus Multivariables from MITs OCW MOOC offering. I have found both self-paced courses excellent and very helpful to refresh my decade old mathematics studies as a preparation to take the Linear Algebra Course presented by...

As it been correctly written in contributions in this thread, preparing for the courses at the university is always worth to do. It is also correct that between grasping the concepts taught and being able to apply the to solve assignments and even more important to learn to think the way the...

One of the lessons I got pretty early was, that we do not know anything about what is real nor are we possibly able to state what is reality in the world of physics! This teaching was the result of what my teacher called the "model character of physics". The best available model is one where no...

I find the question in this thread extremely justified. In all humility I for myself have arranged myself starting from the point of view that physics does not deal with reality but with models that allow to predict an observed behaviour. So for myself I do live with the fact for me, that...

One point of view totally valid and as correct as also the opposite opinion would be! The question is which point of view might open new fields of investigation! Your sentence at the bottom of your contribution should support my point of view: How can we judge something to be meaningless when we...

Reflecting about that i.e. just 6 parameters whose value have to be like they are with a high degree of precision to have a universe like ours and that the probability for having those 6 values to be as they are should have a very low probability in connection with the theories about multiverse...

I used to work for large US semiconductor companies. Physics come with a solid mathematical and physics skill set and have learned with those skills to solve tasks. This ability qualifies you for many jobs in the industry! Besides that, once you start your career live gets you to places and jobs...

Even as evidently nobody takes the time to see what i have answered, maybe somebody someday will see what I am writing. The link to the introduction video of the Stanford university I have given above addresses the issue that is the key difference between doing mathematics as it is taught and...

I have seen once a picture, sadly I do not remember where, that was claimed to be closer to what our current understanding of the universe is. Imagine, just for the purpose to keep it imaginable, that the universe consists of a 3D-Matrix of locations. The universe expansion is just that the...

I am on the other side of the professional life from you who is thinking about what to study. At high school, in german Gymnasium, I finished mathematics with nearly the best rate possible. I also was and have always been a physics enthusiast. Nevertheless I decided to go for mechanical...

For others that might not have heard about lambda before, I I had not. Due to the data in Marcus reply to me I went to the course offered from MIT for free in the Internet, where Alan Guth gives lectures about the early universe in general and his inflation theory. See here! I have seen that...