Recent content by fcacciola

Hi people, I just found out that the famous Feynman Lectures on Physics are now online, so I'm going through them just for fun (I took Physics in College a long long time ago, but was too much content with too little time to actually understand it for real, so here I'm again learning it)...

Fair enough. No doubt it is extremely useful to be able to predict with as much accuaracy as possible. In fact, all of technology is based on that. And, questions about why and, in rigor, what, are naturally outside such a "craft of prediction". However, I don't see why we should constrain...

The most--if not only--important property of the answer to a question is that it be right. And science is the method of coming up with answers for which we can measure to which extent they are correct. If for the ideas we can get to a question there is no reasonable way to determine their...

Interesting... Now speaking of mass vs weigh, if the bag is open, can you consider that there is any amount of air mass "within" the bag.. if yes, how would you measure it? My initial intuiton was that, not being any clear boundary between air inside vs outside, then none of the air would have...

Ahhh, interesting, I was thinking that the weight of the air is actually based (IIUC) on its pressue but then there is pressure on the outside as well, so, I was sort of coming to the conclusion that the "sideness" of the air might not affect at all, "solving" the apparent dicotomy. So, in...

This is a dumb question but I can't find a definite answer. If I have, say, a nylon groserry bag and I weigh it *when is open*, then I close it, then weigh again. It's quite clear that, depending on how I close it, different amounts of air will be locked in the bag so it will weigh...