Recent content by ChrisJA

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    I need to learn about *real* gears

    I am interested in the design of real gears. I know much of the theory as covered in "physics 101." Here is an example of the things I want to learn to compute: Given a gear made of some specific material and a given face width with say Module 1.0 tooth size how much tangential force can...
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    What is the purpose of this program?

    Even 20 years ago when this was written, it has kind of dated. I doubt there is much in here anyone today really designed to understand.
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    What is the Best Tablet for Taking Notes?

    The iPad is by far the best. But forget about uploading your notes to a computer. The iPad REPLACES the computer. The neat thing is the iPad comes with the ah this you really like a word processor, presentation and so on so you really don't need a notebook computer. The low-end tablets...
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    Schools I am puzzled what to do before college placements?

    I don't know anything about how colleges and universities outside of California and the US. Here is an analogy: Let's say you wanted to be a fiction author. You want to learn to write short stories and novels. I'd say the best way is to read a lot of them and jump in and try writing some and...
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    Schools I am puzzled what to do before college placements?

    No, don't avoid anything. I was suggesting what you could do on your own right now. Solving easy well defined assignments is a good start but what I notice most recent graduates lack is the ability to work on problems that are far larger than one person can solve. Typically these larger...
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    Can we create life from scratch?

    The theory is that if some new kind of life sprang up it would be VERY poor at competing for resources and in fending off the more advanced microbes that would see it as food. Also, before there was life on Earth, the Earth was a different place. There was no O2 in the atmosphere and so on...
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    Schools I am puzzled what to do before college placements?

    Coding WHAT? Signal processing on DSP chips? Realtime? Robots, games? Operating systems internals? Have you ever worked on a project that has more than one million lines of code? I doubt you have done ALL of the above. So pick one you have zero experience with and join an existing Open...
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    Can we create life from scratch?

    It's just plain silly to think that a protein could form by chance. No one thinks it could so would good does it do to prove it could not happen. Proteins evolved loved from simpler molecules. The first life was based on RNA and was VERY simple. It likely did not even use proteins and just...
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    Physics Is a career as an astrophysicist both challenging and rewarding?

    It's not an easy field. Many drop out and change majors long before they get close to a PhD. Those who get the degree may have to work in related fields. It is kind of like being an actor. Yes you can be one but you might have to work at some other jobs to pay the bills while you look for...
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    Engineering Electrical Engineering degree?

    Yes, EEs can still find work. But big layoffs happen, then you find other work. Over all you can do well. About books. I'd not start with the normal freshman intro to EE book. Those things are just full of math proofs. Your best plan is to gain practical experience and read the theory...
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    Moral Dilemma for contemplating 2 job offers

    Yes but on the other hand either company might fire you for no reason on a moment's notice with no warning. So what you are really worried about here is burning bridges. You are going to be working in your industry for decades and will bump into the same people. It is smart not to make...
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    Calculating Volume of Solution After Adding Substance

    Could someone tell me the Google terms or where to look in a general chemistry textbook. I want to know the exact volume after one substance is dissolved into another. For example I know a liter of alcohol and a liter of water don't combine to make exactly two liters Or let's say I have 1...
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    Regarding two statements made in the For Dummies Series

    You just said in one line, what took me seven. You win.
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    Regarding two statements made in the For Dummies Series

    This is one method of teaching. Get the answers "close enough" to correct and then come back later and explain the exceptions. The idea is not to over load the student with so many "except or this one exception..." type statements. Teach the big ideas first, then later say "we left this...
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    Can liquid ozone substitute for liquid oxygen?

    I'd say so! Even pressurized O2 gas can kill you. I've used it in scuba diving. Mostly divers breath just plain air but sometimes they mix gases. The training I got about O2 is to treat it with respect. For example it you clean and rebuild a tank valve and there is as much as fingerprint...
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