Recent content by DaveC426913

I'm not sure you're wrong; I'd say you have a subset of the word use. Finding oneself inexplicably lost in a foreign country with no money, contacts or shelter could describe a hapless fella who got there either by no fault of his own or by fault of his own.

You are talking about measurements in a setup that simultaneously spans the millimetres of a liquid's meniscus in a wine glass, to a baking pan, miles wide enough that the curvature of the Earth comes into play. You may not be able to get away with loose descriptions and approximations much...

Well, now we're talking about a very different scenario: the height difference between the centre of the pan and its edges is so great that there is a measurable gravitational gradient. I think Russ is correct: diagrams with approximate measurements (we're talking scores of miles now, instead...

Has this not been covered by the previous material? What parameter are you changing, that would result in a different outcome?

Right. When you get into the weeds of precise measurements of very small values in enclosed rooms, every detail counts. I'm not sure what you mean by inverting, but it's true we have been treating the mass - and therefore self-generated gravity - of the water as negligible.

Indeed you would. Of course, you don't need water for that. A sufficiently long, sufficiently rigid rod, lying on your laboratory floor would not touch the floor at the ends.

The pan's centre is closer to the centre of the Earth than its edges. As far as the water is concerned (being that all it "knows" is gravity) the ocean's surface is flat (so that it goes nowhere on the ocean's surface) - but that the pan is an inverted dome - a sinkhole - into which it is...

Do you know how to open a Command Prompt on your computer? Do so, and then type ping example.com: Bad ping: Good ping:

No, it the water surface would not be flat; it would follow the curvature of the Earth. Note that, if you puttered around this giant pan in a boat, you would observe that its edges are not horizontal and not parallel with the ocean's surface; they will seem to be pointing up at all its edges.

I'm not assuming that, no. I just happen to be interested in chasing down Earth-twins. Before getting into the weeds of tectonics and axial tilts; it would be nice to know how big the set is likely to be for the gross characteristics of planetary gravity and irradiation. I suppose I'm...

Each new report of a confirmed exoplanet adds to the database of knowledge. For obvious reasons, our confirmations seem to stack up in the areas we are currently best able to detect. eg.: Large bodies: Jupiter-sized down to Sub-Neptune-sized, with a smattering of super-Earths. Nape-of-star...

Funny, where we have moved to is in the middle of the Niagara Benchlands, there have got to be a score of vinyards and fruit orchards within a half hour drive - smudge pots are ubiquitous. Unfortunately, for my purposes, using smudge pots indoors is contra-indicated.

By the way, in case it looks like I'm making a big deal out of an otherwise perfectly understandable and harmless rookie mistake, the reason is because not all these plants were new. Some of them were kept in my wife's office under her auspices for decades, after having been bequeathed to her...

Try Goggling "screen sharing a mobile phone". There are a lot of ways it can be done but will depend on the particular technology. But for a quick, low-tech solution, have him build a makeshift stand (like, say a stack of books, or a steady beer belly) and set his phone in front of the computer...

I'm terribly sorry for the confusion. I have been indeed been unclear. I pulled a bait & switch and did not inform you adequately. The graph in post 1 - while not literally based on recorded data - is pretty accurately based on real world experience - including stoplights. A short stint at...