Skip to main content

Must not sleep!

Customers will get me.

On a completely different note, how do you reckon craters like this pair get formed? They’re from the Coprates region on Mars, just under the Valles Marineris, and they’re about 200km across, so if one of them formed on, say, Nannup, it would pretty much obliterate the South West of Western Australia (everything from Bunbury to Augusta and across to Walpole, at least).

coprates craters

Special features to note: the extra hole in the middle, the “terraced” or “double-walled” rim, and the many similarities to each other.

Comments

Anonymous said…
Simple!

Mars is just going through it's "teenage" years.. and you know the teen's worst nightmare! Pimples! :D
Leon RJ Brooks said…
?: not sure what we’d use as zit cream. (-:

M: [craters] Valles Marineris is immedately adjacent to the upper crater, yet shows no sign of the kind of large layer which might produce such an effect. There are other large Mars craters which don’t have the effect (one ~70km across almost immediately N of these), still other craters of various sizes which have a peak instead of a hole.

M: [tilting at planets] couldn’t even speculate on the growth patterns. Possibly “seasons” would be determined by something besides temperature. But imagine a planet tilted like Uranus is, or worse, one which precessed frequently, “catastrophically unstable” in the technical sense of the phrase. Winter equals six meters of ice, summer equals soldering with any handy dark rock or frying an egg by sticking the pan in the sun for five.

Popular posts from this blog

every-application-is-part-of-a-toolkit at work

I have a LibreOffice Impress slideshow that I wish to turn into a narrated video. 1. export the slideshow as PNG images (if that is partially broken — as at now — at higher resolutions, Export Directly as PDF then use ‘pdftoppm’ (from the poppler-utils package) to do the same). 2. write a small C program (63 lines including comments) to display those images one at a time, writing a config file entry for Imagination (default transition: ‘cross fade’) based on when the image-viewer application (‘display,’ from the GraphicsMagick suite) is closed on each one; run that, read each image aloud, then close each image in turn. 3. run ‘Imagination’ over the config file to produce a silent MP4 video with the correct timings. 4. run ‘Audacity’ to record speech while using ‘SMPlayer’ to display the silent video, then export that recording as a WAV file. 4a. optionally, use ‘TiMIDIty’ to convert a non-copyright-encumbered MIDI tune to WAV, then import that and blend it with the speech (as a quiet b

boundaries

pushing the actual boundaries of the physical (not extremes, the boundaries themselves) can often remove barriers not otherwise perceived. one can then often resolve an issue itself, rather than merely stonewalling at the physical consequences of the issue.

new life for an old (FTX) PSU, improved life for one human

the LEDs on this 5m strip happen to emit light centred on a red that does unexpectedly helpful things to (and surprisingly deeply within) a human routinely exposed to it. it has been soldered to a Molex connector, plugged into a TFX power supply from a (retired: the MoBo is cactus) Small Form Factor PC, the assorted PSU connectors (and loose end from the strip) have been taped over. the LED strip cost $10.24 including postage, the rest cost $0, the PSU is running at 12½% of capacity, consumes less power than a laptop plug-pack despite running a fan. trial runs begin today.