GammaGlobulin

Even if you were to call me, "Sir", I would not be satisfied or impressed with anything you say.

"DUDE"? Who talks like that?

Are you sure this is not just another one of many examples of PROJECTION, on your part?

This is a dumbed down book for dummies. Not surprised that you are recommending it. There are many reviews of this POPular book on the web. I suggest you actually READ a few. This is the same genre as Pop Psychology... For example: https://old.reddit.com/r/AskHistorians/comments/igfkv5/is_sapiens_by_yuval_noah_harari_accurate/g2vmkdt/ So, anyway, I would not be surprised if you secretly believe in Ghosts, as well. You know... Sort of a Closet Ghost-Believer...

Well, I guess it takes one to know one.. Ghosts, I mean. And by Ghosts, I mean Foreign Ghosts or Farang Ghosts. And, the proper term for Foreign Ghost in Chinese is YangGui or YangGuiZi (洋鬼 or 洋鬼子). I have been a Foreign Ghost all my life, and loving it. I suggest YOU, too, get comfortable in your own skin, Comfortable enough in your own skin so that people having different skin, meaning different customs and culture, might not bother you so much. Someday, YOU might lose all your money...again. And then, it's entirely conceivable that you might need to depend on kind locals for a handout. Just an innocent observation, and, I hope you might take it to heart, Someday.

John seems to have made some very poor sartorial decisions throughout his life. There are several indicators in the mug shots. I just wish we had a closeup photo of his tattoos.

Fine! But, have you seen this formula for calculating IMPOTENCE? The music on these videos is distracting, too.

I think you might surprise yourself if you picked up a good Physics book at bedtime. You might just find that you are unable to put it down, and read late into the night.

Threads? or Links? Links to the Global Problems of Population Growth, Yale, course: Can be found here... https://online.yale.edu/courses/global-problems-population-growth And links to the Classical Mechanics MIT course: Can be found here... https://mitocw.ups.edu.ec/courses/physics/8-01sc-classical-mechanics-fall-2016/ You can choose other versions of the "Easy" MIT Physics courses which are not so easy at the one I linked in the OP, which is probably for non-Physics majors. And so, if you want the "Real Deal", then choose one of the following courses, instead: https://mitocw.ups.edu.ec/courses/physics/ And, of course, the list goes on... (By the way, the lecturer of the course I listed in the OP is a great teacher, very dynamic, and the young kids seem to love him. He's quite entertaining. Also, he is amazing at drawing dotted lines, something which is worth the watch of his videos, just in itself.) Hope you enjoy the Population lectures, because they are unique, and many universities would not offer a lecture series of this type, in this day and age.

a. You seem too old, and therefore polite and respectful, to be involved in bioengineering. b. You seem interested in steel pipes, and also heat transfer involving steel pipes. c. You are more interested in the practical rather than the theoretical. d. This IS Thailand, and there are many here that work in the petroleum industry. e. So I thought you might be a drilling engineer. f. And, this IS Thailand, and there are very many drilling engineers here, in Thailand.

Just out of friendly curiosity... You wouldn't happen to be an engineer working in the petroleum industry in Thailand... Would you?

Working on it... Please be patient. "HydraulicsIOP Conf. Series: Materials Science and Engineering779 (2020) 012028IOP Publishingdoi:10.1088/1757-899X/779/1/0120284 Figure4.Electric dump truckeDumper Like all electric vehicles, eDumper recuperates the energy generated by braking. While braking occurs, the electric motor goes into reverse mode, producing electricity that charges the batteries. The eDumper is used in a mine near Biel (Switzerland). Ittransports 65 tons of rock to a cement factory down the mountain with a slope of 13%. When descending from the mountain, the dump truck has a large inertia, due to which the regenerative braking system chargesthe batteries. As a result, eDumper charges itself and does not require frequent network connections. Battery charge measurements were taken after ascending with a fully loaded body and after descending to the loading point in the quarry. At the beginning of the rise, the battery charge was 90%, after the rise it was 80%. After the descent due to the recovery of power, the batteries were charged up to 88%, which is almost equal to the initial charge of the batteries. A dump truck carries out about 20 descents and ascents daily."

This is correct. It is NOT necessary to measure ANYTHING after the fact. And, taking measurements after the fact would be too late. You need to begin by knowing the energy available, as I have stated several times. Then do further calculations to determine quantities such as generator/motor efficiency, or energy lost to heat of tires as they heat up with use, or energy lost when batteries are charged, because when batteries are charged, and heat up as a result, energy is lost.

YES! Exactly! This is exactly the SAME concept. Except, in the UTUBE example, a truck is used with generators onboard the truck located at the wheels. Oh, Wait. Having watched the video, this gondola system does not use electricity. Therefore, different concept.

First off, you do not NEED anything traveling uphill so that you can take measurements. It's a simple matter to do the equations before the truck is even built. Also, if one were a designer of this truck, then it would be required to first do all the calculations that I mentioned. You would need to know the total available energy, which means the potential energy at start, minus the potential energy at finish. And, let's NOT quibble about insignificant wording such as "topping up". Obviously, I was speaking about measuring, in some way, the amount of energy, either net loss or net gain, after the round trip had been completed. For some reason, and I do not know why, you continually think that it is a wise idea to build a system, without first doing the calculations, and then take measurements AFTER THE FACT. Well, yes, this might work for CURTAIN HANGING, for example. But this is not done when designing a system as shown in the UTUBE video. So, I would be OK with using your approach/method, if I were advising an interior decorator to hang my curtains. But, I would not trust your methodology to design any important engineering. Build first. Then measure. Build first, Then measure. Who does that?

My Dear Phellow Physics Phriends: This is NOT a JOKE Post! Here, instead, I am posing a serious question. It’s not really a question, but more of an encouraging word from me, just a word which I hope might goad you into picking up your dusty slide rules and hitting the books, all with the FREE help from MIT. I can hear you saying that you are TOO OLD to learn any new tricks. However, this negative thinking and backsliding-perspective is completely false. I happen to know that there are many, MANY people here who once took physics in high school, or college, or TRIED to take Physics in either, or both. Now that you are retired, or nearing retirement, or even if you have a couple of hours after a hard-day’s work, in the evenings, MIT OpenCourseWare offerings might be just the thing to restore whatever it is that you fear you might be missing in your life. As for me, I DO Plan to begin covering two semesters of uni Physics at MIT. A couple of years ago, I completed a great two-semester course at YALE taught by a prof who is at the forefront of his field, Prof Wyman and his “Global Problems of Population Growth”. Wyman’s course is very insightful, but nothing challenging, really. This time, I will do a review course in first-year Physics, simply because, after many decades, I realize that now my mind has been filling up with cobwebs during the past few years in Wonderland. And in Wonderland, Physics is fairly unimportant, or just Go Ask Alice, when she is feeling small. Why do this? a. This past week on TV, two Fantastic Topics have been posted involving basic understanding of Physics. And, in the reading of the Topics, and in the comments section, I detected some lack of understanding about the importance of Physics in our modern world. b. But really, I am the BIGGEST CULPRIT when it comes to forgetting my Physics. c. However, it is much MORE than this. Our brains MUST BE Challenged if we are to feel like Whole Human Beings. Therefore, what greater challenge than trying to re-study first year Classical Mechanics, and also trying to do this with kids who are only 18, or maybe 19, some of them. I hope a few of you will consider this challenge because, for those who take up the gauntlet, many priceless rewards await you, and these are prizes that money just cannot buy. Before I go on to the MIT Physics Courseware link, let me just add the "Global Problems of Population Growth" link… One moment please… And now on to MIT Physics (first semester, Physics One, and this is the EASY Physics course at MIT, not the one for the Physics geniuses at MIT): Concerning both courses linked above, they are both SUPER interesting, and you are gonna learn a lot. Personally, I am sick and tired of being embarrassed on this forum due to all the Physics I have forgotten in over 50 years of living since my last Physics course. Please keep in mind, however, that if you really want to benefit from the MIT course, you are going to need to FORCE yourself to do the homework, which I think you can find on the MIT website (It's there. The exercises, the readings, all of the good stuff is there.) Is this doable for some Old Guy, like me? It is. And there are no time limits. Go at your own pace, and complete the courses. You guys are really going to thank me for posting this Topic; I know it! Wishing you a brighter and more intelligent tomorrow, through better Physics, and, Regards, Gamma (Gamma with the BIG G!, for Gravity) Please Note: When I was MUCH younger, I actually knew a few old guys who re-learned/learned Physics, and they were successful. Physics is a Natural Science that can provide new perspectives on the world, and on Reality, without resorting to the use of drugs. So then, just click on the links and do your best to train your brain.. If, that is, you, too, feel that you have too much time on your hands. Prof Wyman’s course is DYNAMITE and you will enjoy every moment of it… Guaranteed You can find the COURSEWORK on the Uni Websites for each of the above courses, and so don't miss out!

I just hope that, someday soon, I find a genuine genius woman in Thailand.

So anyway, Guys... I just REALLY HOPE that you people are able to generalize enough in your thinking to GRASP THE FUNDAMENTAL CONCEPT THAT: a. In this case, we are using ROCK flowing downhill to generate energy to power the truck. b. This is NO DIFFERENT from using water flowing downhill to power a water turbine to generate energy to power a truck. The calculations are identical in terms of calculating the energy provided by gravity, which is converted into an electric current, which is stored in a battery, and in-turn used to power an electric vehicle. I do not know why this simple concept is so difficult, really...

Yes, well, you may be missing the point of my simple question initially which was: In this case, WHAT IS THE TOTAL energy available? In order to calculate this, it is simple to subtract the potential energy at the end point from the potential energy at the starting point. After doing this, in case anyone might be interested, you could top-up the battery after one round trip, and then see if there had been a net loss or a net gain. And by doing this, you would know the energy loss or gain of the entire system. This is really no different a case than a waterfall, for example. Except, in this case, you have rock flowing downhill. And the rock is carried by a truck, instead of a pipe or a riverbed. Or, you can think of a hydroelectric generator with water flowing downhill to power the generator. OR, you can think of a storage batter using water instead of electricity, such as in the case of PUMPED STORAGE: But, no matter what you consider, in these cases, you still gotta use.... BIG G! Now you see? Just do the simple calculations as they taught you in high school, beginning with F=ma.

If you want to calculate the potential energy of the payload of the truck at the top of the hill (or available potential energy going from start at top to end at bottom), then, you are going to need F=ma, and the other equations you can derive from F=ma. Sorry, but that is just the way it is. You can refer to this video, for example.... And look! He is using....BIG G! You see???

That music is wicked bad.

No. But, have you tried Preppy H?

If I were to ever return to the USA, I would definitely hang that shirt on the wood paneling of my conservatively furnished study (no joke). I like the colors and the design.

What are his Tik Tok Teaching Credentials? I want to see his CV. Was there any justification for allowing him to teach students, in the first place?

This is the look for Saturdays. While hanging out in New England, or... Similar places. Connecticut, for example.