Recent content by sophiecentaur

macOS helps you here. It generates a very secure PW for you and then it's stored in your Cloud. There's only one PW for the user to remember and (with my leaky brain) that's easy. The snag is when you come across a dumb website that can't communicate with macOS and you find yourself back in the...

It's fine. A bit prettier than the old style and, of course, I thought I had wandered into the wrong place when I first saw it. It has an open, optimistic quality; well done.

Smashing idea. It has plenty of info and really needs no extra info about the Earth's orbit. Alternative graphs are eye catching and can carry a powerful message. I don't know where this one (below) came from but it has impact in a similar way to yours. I'm not a footie fan - it's just the...

I think we can restrict detection to detecting EM transmissions. Such transmissions would only be produced during the window of the civilisations existence so that evidence would not be long lived. I have to admit, of course, that my views on this are somewhat biased and I do not have what I...

You're suggesting that there is a hard distinction between a paradox and a non-paradox. I'd say that there is a whole continuum of paradoxicality. People so want it to be a fact that LGM are only just around the corner. As with religions, it's more of a faith thing and using the term 'paradox'...

Precisely. You can only have a paradox when the 'numbers don't add up'. Drake etc. work on such a range of known unknowns and the quantities involved that it's bordering on foolishness to complain when the answer to our model doesn't make sense or, worse still doesn't produce the answer that so...

Even down to the handedness of their glucose molecules. There are no examples of Earth life forms with left-handedness, ifaik. They would have no food value at all (nor us for them).

I have to say this thread seems to have its feet pretty firmly on the ground, discussing what to do with the Moon is far more meaningful than discussing Mars and beyond. We can at least attempt to predict where Engineering will be by the time there's a serious project happening.

This seems the obvious answer if only because no rotational alignment would be needed for the washer. / wedge If the faces on the lumbar plate are parallel and perpendicular to the axis of the bolt the fixing is always going to work. The only problem could be that plates would need to be...

The Fermi paradox emerged from a lunchtime chat and addresses a need that many of us have for an idea of just how important we are (as individuals and as a life form). The Drake Equation attempts to state the situation in terms of timescales and probabilities but how can it yield a solution -...

So why not use tilted discs to show the summer and winter orientation (not distance)? Easy to do and the tilt would be easily visible with a perpendicular / vertical rod to show temperature. You'd be showing something that's relevant and can be appreciated by the observer.

This thread gets us nowhere. We all (with the exception of the OP) seem to agree about the 'facts' but the OP seems to want to use a 3D printer for something which is not really appropriate. There are many possible models of physical processes that are suitable for 3d printing. Astronomical...

That word "authentic" is hard to define in a situation like this. You would need several versions to find the 'best one'. An experiment using various ellipses and circles, viewed from various angles would tell you how important the eccentricity actually is. (Would you actually spot the...

Absolutely. The yearly variation of temperature in the North and South hemispheres correlated differently with the orbital distance. In the Northern winter, the Earth is in fact nearer to the Sun; the inverse is true for the South. I think you may have a problem showing all the data the OP wants...

It would be difficult to achieve this in multiple occupancy buildings with many floors and no surviving records of tests. In UK, the supply to the house is usually provided with an armoured sheath which is connected to the Neutral conductor back at the transformer. (TN) That is considered to be...