26 posts • joined Tuesday 20th October 2009 22:02 GMT
Watch cover glass
Sapphire has been used as the cover glass on watches for a long time (at least on the high end). It is also used for infrared optics that require a certain amount of robustness.
Public open day 29th Sept
I was considering booking a holiday.
If you already have a microscope...
If you have an optical microscope, you can actually get quite good images by holding a cell phone camera up to the eyepiece - a few mm of shuggling about - look for a bright flash to show you are in the focus of the microscope lens, then slowly move it towards and away to optimise illumination of the camera sensor.
At least, it works for my kit. YMMV.
Re: Operating conditions?
It is likely to be operating in an more complicated/ even cooler system than liquid helium. The article says it cooled the copper block from 290 mK, which means they probably used a dilution refrigerator to get there, since liquid helium boils at around 4 K (-269 C).
Re: Where are we going to store it?
From Wikipedia: Precursor to chemicals
In the chemical industry, carbon dioxide is mainly consumed as an ingredient in the production of urea and methanol. Metal carbonates and bicarbonates, as well as some carboxylic acids derivatives (e.g., sodium salicylate) are prepared from CO2.
There is also some work looking to make green polycarbonate plastics from CO2, though it is early stage and unlikely to make a significant dent. The main (hopeful) future use for CO2 is to use it as a feedstock to make fuel, which is about the only chemical we need at scale to make use of the amount of CO2. This does of course take energy, but if it can be supplied from a renewable source, future CO2 release from fossil fuels would be reduced or eliminated. Methanol can be made from CO2 for example, and there is also the dry methane reforming reaction to make syngas, which can then be used to make liquid fuels via the Fischer-Tropsch process. This is arguably nicer than steam reforming, but people are unlikely to stop that, since the hydrogen it produces is much more valuable. There may be a role for small installations, but it often makes more economic sense to flare methane than transport it to market.
Re: Where are we going to store it?
There are some uses for CO2 that could soak up some of it, but generally these demand a pure CO2 stream, so it is useful as a step in the recovery/re-use process. The research looks nice, but I would worry about the resilience of the MOFs, especially at the elevated temperatures likely to be used in gas flue streams. (Temperatures up to 30 C reported in the paper) and likelihood of poisoning in real gases.
Yes, iphone same since 2007. Apart from
4 case designs
doubling screen resolution
6? operating system versions
3 SIM sizes
moving to LTE from GSM via 3g
starting an app store, which has generated $8 billion for developers
quadrupling the cameras pixels whilst increasing aperture
doubling the number of cameras
doubling processor speed over five architectures
octupling system memory
But apart from those, totally the same.
It might be nice if google is trying to sell at super-cheap prices to gain market share. Buy one and install linux, assuming that there is some replaceable HDD/SSD storage. Is there really a market for chrome OS?
Re: Never mind the nuke angle, there are more important questions:
Since the Americans don't like them, how about naughtynauts?
Re: umm, this IS a laptop
There are not that many laptops available with 22 and 27" screens. If you want a big screen, but don't want cables, clutter and so on, it is a fairly good option. As for price/performance it may not "perform" in the way you want it to, but that does not mean that it doesn't perform well in features that you obviously don't care about such as looks, size, and quiet running.
You could not make a PC that thin, with a display as good that was as quiet in running as the mac. Thinness and quietness do not matter to everyone, but they matter to some.
Re: Wrong street
Can't you see the big glowing apple above the doorway? And the crowd control barriers stacked up as well.
Pics of previous shooting
Previous laser test pictures here: And if you are on twitter, follow @MarsCuriosity - some really good tweeting and pics.
Lost credibility here for me:
From the article: "Still, one thing is a pretty safe bet: over the long haul, openness generally wins."
Really? It seems to me that closed generally wins. It isn't like linux is the dominant OS. I can't think of a single field in which this is true. Of course, the wording of the sentence also has that little "generally" in it to rob it of any conviction, in case the bit about betting in the first half didn't clue you in..
Android phones outsold iOS phones. This does not take into account other iOS devices, such as the ipod touch or iPads. iOS devices are more homogenous, so you don't have to worry about hardware differences as much, and iOS users are also more willing to part with money for apps.
In an ideal world, developers would port for all platforms, but the fact is that iOS is the most attractive target for limited resources.
32 GB 3Gs problem
My 3Gs threw up an error message of "30", and then I had to reinstall from the backup made just before updating. That worked fine, but copying across the 30 odd gig of data took an hour or so, making it a long process. FWIW its PAYG and syncs with a mac.
Interesting choice of macro shots which, erm, aren't. I have an LX3 and recommend it highly. It will focus down to 1.5 cm in macro mode and give a great close-up. Also, due to the lovely fast lens it is great in low-light conditions which allows for decent indoor photos without a harsh flash.
I'd suggest anyone properly interested to go and have a look at the flickr camera search.