Radiation

  • Feb. 23rd, 2009 at 3:12 PM
teyla: Mary Morstan from Sherlock giving a thumbs-up. ([dw] geek)
Alpha radiation are big helium ions with two surplus protons and therefore positively charged.

Beta radiation are electrons or positrons and therefore either negatively or positively charged.

Gamma radiation are photons and therefore not charged at all.

Of the three, alpha radiation is actually the most harmful, because those helium ions are big. But since they're so big, you can actually shield yourself from them with nothing more than a piece of paper. Beta radiation is what's usually used for radiation therapy. Hard gamma radiation is what they use for x-rays. Gamma radiation is hard to shield from, since photons are tiny.

Sometimes, I really miss my physics class. .__.

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This is my post about the LHC

  • Sep. 11th, 2008 at 2:04 PM
teyla: Mary Morstan from Sherlock giving a thumbs-up. ([sga] mckay physics)
... in which I'm revealing how lol overinvested I am about this issue. People, stupid, stupid people, stop driving me insane! The LHC won't be creating black holes for a couple of months. When it starts doing that, the black holes will be TINY TINY TINY. Which means that even if the black holes turn out to be stable (which they won't - trust the Hawking, he knows what he's doing), it'll take them years to suck away the Earth.

I like this site. It provides all the info you need. Click here.

Other than that... not much going on. Well, much going on; nothing interesting though. I have now watched Buffy up to the middle of season 6, and urgh, death didn't do anything for Buffy's personality. Before she died, she was just dumb. Now she's dumb, cruel, hypocritical, dishonest and overall a mopey bitch. She needs to die in a fire. I kind of sort of get a little that she's uncomfortable with suddenly having developed a kinky side, but it's not okay to take it out on Spike, and it is so not okay to be all, 'oh, I'm totally okay with being kinky and into unhealthy relationships as long as I'm invisible and my friends will never find out'. How stupid, dumb and shallow is that?

Also, the bad guys this season - what the fuck is going on there? Nerd clichés ftl. I might not be completely objective about this, because I'm a huge nerd myself, but undifferentiated nerd clichés in TV shows are one of the things that completely turn me off. Just because I love physics and know how to say chocolate in Klingon doesn't mean I'm immature, selfish and irresponsible. One of the nerds in Buffy is a technical genius; he built a robot who walked and talked like a human and had an amazingly complex artificial intelligence. Put in the right place, this guy could save the world. But he never gets credit for that; his scientific genius isn't even acknowledged. It's all, 'you built yourself a robot girlfriend - YOU USELESS PERVERT!'.

Nerds are always being displayed as the dumb ones, which is so skewed, because actually, they're the intelligent ones. Social and popular people don't get laughed at and portrayed as negative characters just because they don't know what a matter wave is. Nerds, who can explain to you from memory how to derive the formula for matter waves, are the disliked or comic relief characters just because they have a hard time being social. And while the dumb popular chick always needs to get a reprieve - like Cordelia - the nerd cliché seems to be perfectly okay. It annoys me very much.

Er. Yeah. My thoughts on nerd stereotypes, let me show you them.

What's going on with you guys? I've been reading the f-list, but since I'm only getting around to checking it once a day atm, I'm usually speed-reading and not commenting much. But I'm around, so if there's some entry you expected me to comment on, let me know, please!

The Return of the Antichrist

  • Aug. 8th, 2008 at 12:10 PM
teyla: The X-Files poster. ([xf] want to believe)
Forget Black Holes slurping up the Earth as an afternoon snack. We have uncovered the TRUE PURPOSE of the Large Hadron Collider.

Allegedly, the LHC was built to discover a particle that the CERN scientists (who are actually all members of the free-masons' society) call the 'God particle'. That nickname does not take its origin in the fact that the God particle, or Higg's Boson, is assumed to help otherwise massless elementary particles to construct mass in matter - in other words, it gives matter mass - but is based on the scientists' intention to prove the non-existence of God. Why they would want to do that, if they're actually free-masons, is not entirely clear, but it's so obvious that there cannot be any other explanation.

But actually, the LHC was not built to discover any particle. Actually, the LHC is the machine of the Apocalypse and was built to tear a hole in the van Allen Belt to allow Satan and his minions to travel from Nibiru back to Earth to wreak havoc.

We have a believer. )

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teyla: Mary Morstan from Sherlock giving a thumbs-up. ([sga] mckay physics)
You may have heard about CERN. It's the Centre Européen pour la Récherche Nucleaire, the European center for nuclear research. It's located on both sides of the Swiss/French border near Geneva, and it's where the intarwebs was invented.

You also may have heard that CERN is building - respectively has built - the LHC, the Large Hadron Collider, which is a huge bad-ass particle accelerator. Quoting a google group: This mechanical behemoth located along the French and Swiss border with a total estimated circumference of 17 miles will be the most powerful particle accelerator in existence. [...] The Large Hadron Collide is hoped to discover what is referred to as the "Higgs Boson". Although a theoretical scalar particle theorized by Peter Higgs in 1974, it is actually a member of the standard model, and it is believed that the Higgs Boson is what gives matter "mass". To achieve the observation of the Higgs Boson, the LHC will be smashing these Hadrons (specifically Protons) together at speeds almost unimaginable to the average person, at near [light speed].

This fills me with glee, because I have a thing for big bad-ass particle accelerators. What fills me with amusement, however, is the reaction CERN is getting for building this accelerator.

Cut to spare the f-list. )

[source]

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Wow, technology.

  • May. 8th, 2008 at 1:52 AM
teyla: Mary Morstan from Sherlock giving a thumbs-up. (sonic!)
A couple of days ago, I discovered that my new laptop didn't have a S Video interface, so I bought a PCMCIA card off eBay. There wasn't a simple card with only a S Video plug, so I bought something that was labeled DVB-T Duo Digital/Analog CardBus, not really knowing what it was. I only wanted the S Video interface, and eBay said this item had one, and it wasn't expensive.

I got it yesterday, and dude. This thing is awesomecakes. It's this small card that I can stick into my laptop, and it effectively turns the laptop into a TV. I mean, I knew of the existence of these things in theory, but I'd never quite realized how shiny they are. And this one doesn't only receive analog signals - the stuff you get from cable or a normal TV antenna - but it can also receive DVB-T signals. That's like having a TV antenna, only that instead of the blurry analog signal, you get shiny glossy digital signals - and you get a lot more of them in comparison to analog TV. The area I live in is actually covered.

Of course, I live in a basement, so this isn't of much use to me down here. I can still receive cable TV on my laptop now, though, and I can record it directly onto my harddrive, too. And as soon as I move out of here, which will be at the end of July at the latest, I can laze around in my bed at my parents' place (where my room is directly under the roof) and watch TV on my laptop. Theoretically, I could also take the laptop, the card and the antenna (which is tiny, really, about the size of a pen) someplace that isn't a basement and watch TV there.

Wow, this is shiny. Not that I'm even all that interested in watching German TV, but this technology is not restricted to Germany. I can take the card and the antenna with me to England, and I'll have my TV all ready and set up even before I move it. Awesome.
teyla: Mary Morstan from Sherlock giving a thumbs-up. (physics)
I know I'm spamming again, and I'm really sorry for that, but I just found the most amazing link on [livejournal.com profile] housepiglet's journal.

Do you rely more on your right or your left brain hemisphere?


They have this animated image of a spinning dancer, and depending on which side of the brain you use more, you see her spinning clock- or anti-clockwise. I'm not so sure about all these things they're listing that are supposed to be located in either side - I'm not gonna go on about how no function is located solely in exactly one area of the brain, suffice to say that I have listened to my dad rant often enough to be very suspicious of this whole brain mapping thing - but I don't have a problem believing that the direction of the spin is a matter of which brain hemisphere you rely on most. Which is cool enough for me.

Mine's spinning clockwise, but I can make her change direction if I focus. It's awesome.

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Science Geekism!

  • Dec. 7th, 2007 at 12:18 AM
teyla: Mary Morstan from Sherlock giving a thumbs-up. (kapow!)
So, I've been wondering about the physiology of Time Lords.

We all know they're different somehow. For starters, there's the two hearts. Then there's all these acrobatics the Doctor keeps performing where radiation is concerned. How exactly does that organism work?

I'm gonna try and find a hypothesis. I can only base it on New Who, because I haven't seen the rest. If I find that this is fun, I might add to it as soon as I've watched classic Who.

Major geekism under the cut (Spoilers for all of New Who) )

Oh, I almost forgot: I won't be here over the weekend! Probably. I'm visiting with a friend, and I'm not sure how much time I'll be able to spare for the intarwebz. See you Sunday at the latest!

Acoustics

  • Nov. 8th, 2007 at 5:33 PM
teyla: Mary Morstan from Sherlock giving a thumbs-up. (physics)
Uni courses that start at eight are just way too freaking early :(. Especially when they go on for 4.5 hours. My life = hard.

But we did fun stuff in that course today! So it wasn't all bad.

Read about frequencies and overtones and how the trumpet manages to make do with only three valves )

Hee, this turned out way longer than I had planned. Lol.

In fandom news, I'm still adding to the Doctor Who fic *knocks on wood* and I even have a sort of a plot by now. Currently I'm trying to write a scene which should be funny - the Doctor being creeped out by a cat - but it's so hard to pretend to be someone who doesn't like cats! How can one not like cats? Cats are FTW.

Also, I made my first video icon, but it turned out way too dark and I'm NOT doing it again because it took me hours to make it (I had to figure out the technique first).

That's about it. I think I'll go and write some more now.
teyla: Mary Morstan from Sherlock giving a thumbs-up. (physics)
It's my mom's birthday tomorrow, and due to the fact that the ATM machine ate my card, I couldn't buy anything for her. So I made her a birthday card using a paper cutting-and-folding technique that I worked with a lot when I was a kid. It's a 3D-effect thing, and I remember being completely fascinated by it. I still think it's kind of cool.

I took pictures - they're not by far as shiny as the pictures in the book that I have, but since I don't have a scanner, these will have to do.

Click to see )

And secondly, I have more random neurophysiology to share. Do you guys know the fainting goats video?

ETA: You guyz, you guyz, I got it all wrong! Lol. [livejournal.com profile] beandelphiki asked me about something that I didn't know, and so I asked my dad about this, and apparently, the lecture guy got it all wrong! Idiot. Anyway, I edited the entry :).

Click here for fainting goats and neurophysiology )

Time for some rambles! Yayz :)

  • Jun. 22nd, 2007 at 2:33 AM
teyla: Mary Morstan from Sherlock giving a thumbs-up. (physics)
Hah! I feel like posting a long post tonight. Be forewarned!

The part where she rambles on about stuff she found on fandom_wank, and how only common sense and self-preservation kept her from joining in on the wank )

And to make this post more than just a quiet private wank, I'll post something that my dad told me about when I stopped by his office on Wednesday.

The part where she rambles on and on and on about neurophysiology )

Pulling G's

  • Mar. 25th, 2007 at 9:56 PM
teyla: Mary Morstan from Sherlock giving a thumbs-up. (physics)
This afternoon, I experienced the phenomenon of "pulling G's". Having read about it in countless SGA fics, I was understandably excited.

This afternoon, I went on a very short fifteen-minutes flight over a small city (Innsbruck) in the Alps with the boyfriend of a friend, who flies for a hobby. We were flying in this teeny tiny 4-person plane. And when he made this turn you have to do before the landing approach, he didn't do it the standard way, but he went into a very tight turn and tilted the plane so it was in a 90-degree-angle to the ground. That's when the G-pulling happened. According to the friend's BF, we were pulling 4 G's (I can't get enough of saying this). Because I'm a geek, I made a drawing that illustrates the physics of this phenomenon.

Drawing and Physics )

The friend's BF told me that in aerobatics, the pilots do maneuvers up to 7 G's (Air Force people go even higher - no idea how high, but they do have those suits, after all). He also promised me to take me on another trip and do a 0 G maneuver, which leaves you essentially weightless. Ever since I heard about these maneuvers in my physics class in school, I wanted to try that.

In other news, I only found out that the Austrian Autobahn is terribly, terribly boring to drive. It has a speed limit of 80 mph, but mostly, it's restricted further to 62 mph. I almost fell asleep behind the wheel. And I was really glad when I'd crossed the border into Germany and could step on the gas pedal a little ;).

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