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March 30, 2007

Saving the planet...

OK - here's another one. Replace your old CRT television (as good of a heater as it is a television) : go out and replace it with a high definition LCD television. They use way less power. Remember - you're not doing this for the high-def TV, you're doing it to save the planet. While you're at it, if you're still using a CRT monitor for your computer, 19" LCD screens are really cheap these days and will use a lot less power. Yup, these are the sacrifices we all have to make.

March 26, 2007

How to save the planet...

...while being totally lazy. This environmental stuff is a piece of cake, so I'm going to start listing lazy ways to save the planet. Go out and replace your light bulbs with those fancy fluorescent bulbs. This requires shockingly little exertion (especially since Jenn just tricked us out with a ton of them and I didn't do anything at all). They use way less power, cut your power bill, last for years and years, and your friends will be totally impressed and intimidated by you when they see those light bulbs at your parties. In fact they'll go out and get their own too just to keep up with you. That's how hip you'll be if you do this. OK, I'll dole out more of these great ideas later.

SO - Want pure water? Well this guy uses all of the standard gimmicks to claim that he's the only person on this earth who knows how to purify water. It's exceptionally fraudulent: worse than the usual junk. From his silly technobabble, I'm guessing it's both a still and an ozonator, but probably not very good at either. Let's look at this briefly:

1. Quack sites always begin by discrediting legitimate science, and also by invoking some sort of conspiracy theory. Let's see here. He convincingly says that "[scientist's] purest water cannot kill pathogens". Duh. Water can not and does not kill pathogens. Water is water. Ho-Hum. It's not an antibiotic. It's water. Yet what a great line - he uses a mindless and trivial statement of the obvious to take a jab at scientists. This is a little refreshing actually - often these sites take the approach of claiming scientists are trying to hide something. Hmmm, now where's the conspiracy? I see it in a few places like "Regulators are learning from us.". OK, so he's taking the approach of, "hey I've saved the world but my genius is being suppressed".

2. It's the bogus medical claims that take this from funny to serious. Take for example, "Their water can not even kill pathogens, ours does!" and it goes on to explain his water only kills the bad ones and is "better than chlorine". This sounds vaguely like ozone, but then he starts throwing out names of scary diseases like AIDS and diabetes and hopes we'll jump to conclusions. Of course there's the disclaimer, "This information...is not intended to diagnose, treat, cure or prevent disease". Then why did the web site prominently mention diseases or include a supposed testimonial of a cancer patient? Giving anybody with a serious illness false hope over quackery should be criminal.

3. Sneaking in conventional science. The irony is that he claims his contraption generates ozone to purify the water, not exactly rocket science. So if you feel strongly about it just get an ozone purifier from a reputable dealer. While ozone is great up in the stratosphere, it's a bad idea down here in the air we breathe, not exactly environmental. After a quick look, I can't find any official/authoritative position on using these things in closed spaces but, for the record, I wouldn't.

4. Sneaking in the junk science. They can never resist and this gem is no exception. Yep, they've changed the bond angle in water from 104 degrees to 114 degrees. Pour me a glass!

March 22, 2007

Back from Break

Jenn has really trounced me with some pretty great posts since we got back from break, so I have some catching up to do.

I just watched a ton of UFO videos on youtube. I wouldn't take any of them too seriously, but it's fun to think about. The big problem for me is the speed of light. It would just take too dang long for anybody to get here (or for us to get anywhere else for that matter). If you must, here are some but don't blame me for the cheesy music.

On a terrestrial topic : some call it warming, some call it cooling. Many study it - a few hot-heads are trying to gain fame by denouncing it. Let's call it global climate change. Acid rain has had global impacts, just check the lakes in Wisconsin or ask the Germans about the Black Forest. Smog and air pollution in general affect most major cities (top honors to LA apparently). In a myriad of obvious ways we have altered and/or damaged the planet's chemistry and environment. And yet apparently no matter how much you rattle off examples of major global harm to environments (like killing off marine life in the Thames or Charles rivers for example), there is an irrational sentiment among some (see the above comment about attention-seekers) that nothing 'serious' will ever come of global climate change or who will even claim that global climate change doesn't exist. Well, this post is for you : I don't care what you believe, skip the whole global climate thing for now, wouldn't it be nice to walk the streets of Tokyo without an oxygen tank, go jogging in LA any time you like, to hike lush forests that aren't undergoing acid decay, to go fishing and not worry about mercury, to not live next to gross coal smoke stacks from power plants (we did that once - yes, it's gross), etc ...?

Some people make it out to be scary but it's fixable, and here's a link suggesting an encouraging sign out of Wisconsin. I'm apparently the only person in the country who hasn't seen an 'Inconvenient Truth', but I'm told that it stresses a pretty positive message. We're pretty smart - why not fix this stuff? Are we afraid of a slight challenge? I hope not.

March 11, 2007

More Random Science Trivia

Some more random science trivia from the web:

-the world's smallest fish is about 8 mm long

-genomes of ancient species turn out to show that T-Rex had a small genome. It's wildly tempting to draw rash conclusions from this, but that would be dangerous. That's why this is just random trivia...

-those of us with brothers/sisters can really relate to this one; cutting a round pie into fair portions is really, really hard. Square cakes are easy. Parents, take notice.

-with easter approaching, it may be of interest to note that with at least one batch of peeps, the eyes could not be dissolved in any solvent, including sulfuric acid.

March 07, 2007

Some random science trivia

Oxygen is the most abundand element in the earth's crust (ie - not the atmosphere but the outer shell of matter that we live on). This is due mainly to silicates.

Despite all the Star Trek you've watched, there's no such thing as a tachyon, although there is a hypothesis that such a thing could exist if you don't mind paradoxes.

There are molecules called 'moronic acid', 'megaphone', and many others that are much worse that I'll avoid mentioning directly in order to be tactful.

OK - nice quick entry!

March 05, 2007

Back to Magnets

Helium is a tricky thing - it's a very light, monatomic gas, which is exceedingly unreactive (inert). With a great deal of effort you can cool liquid helium to about -269o Celsius and it will finally liquify at this temperature. It's pretty tedious to call this -269 degrees Celsius, and it's kind of hard to wrap your brain around a temperature that cold, so to put this on the Kelvin absolute temperature scale that is the same as 4 K. Helium is one of nature's most amazing gifts to scientists. And of course, like any precious resource, we're using it up. Helium is so light it escapes eventually to space. What's it good for?

Magnets of course - really, really, big magnets. Some conductors, when cooled to very low temperatures (like 4 K) become superconductors. They transmit current without resistance. So a terrific way to make a magnet is to make a coil of this wire, immerse the wire in liquid helium, and then put some current in the wire. The current will persist indefinitely and the magnetic field that results from the electric current flowing through the coil will also persist indefinitely. It's a magnet you don't have to plug in! These are the kinds of magnets used in magnetic resonance imaging, for example, and a lot of other important things too.

Political aside : I know nobody reads this and it's just my own journal, but I'll make a suggestion for some political action anyway. Helium is a big part of the foundation on which most modern research has been built. It doesn't always get a lot of time in the spotlight, but if it ever goes away we're in big trouble. If you find yourself writing your congressional rep, please consider putting in a word for Helium as a precious resource in the nation's interest that we should be stockpiling, and finding new sources for mining, etc.