# Stories tagged Physical Science

Dec
26
2009

## This just in...instant weight loss without dieting courtesy of space and Albert Einstein!

GOCE Satellite: The Gravity field and steady-state Ocean Circulation ExplorerCourtesy ESA
Can it be true? Yes, for a mere \$5,544 dollars round-trip airfare to Greenland! In March 2009, the European Space Agency launched the Gravity field and steady-state Ocean Circulation Explorer (GOCE) into orbit around our planet, which is now transmitting detailed data about the Earth’s gravity. The GOCE satellite uses a gradiometer to map tiny variations in the Earth’s gravity caused by the planet’s rotation, mountains, ocean trenches, and interior density. New maps illustrating gravity gradients on the Earth are being produced from the information beamed back from GOCE. Preliminary data suggests that there is a negative shift in gravity in the northeastern region of Greenland where the Earth’s tug is a little less, which means you might weigh a fraction of a pound lighter there (a very small fraction, so it may not be worth the plane fare)!

In America, NASA and Stanford University are also working on the gravity issue. Gravity Probe B (GP-B) is a satellite orbiting 642 km (400 miles) above the Earth and uses four gyroscopes and a telescope to measure two physical effects of Einstein’s Theory of General Relativity on the Earth: the Geodetic Effect, which is the amount the earth warps its spacetime, and the Frame-Dragging Effect, the amount of spacetime the earth drags with it as it rotates. (Spacetime is the combination of the three dimensions of space with the one dimension of time into a mathematical model.)

Quick overview time. The Theory of General Relativity is simply defined as: matter telling spacetime how to curve, and curved spacetime telling matter how to move. Imagine that the Earth (matter) is a bowling ball and spacetime is a trampoline. If you place the bowling ball in the center of the trampoline it stretches the trampoline down. Matter (the bowling ball) curves or distorts the spacetime (trampoline). Now toss a smaller ball, like a marble, onto the trampoline. Naturally, it will roll towards the bowling ball, but the bowling ball isn’t ‘attracting’ the marble, the path or movement of the marble towards the center is affected by the deformed shape of the trampoline. The spacetime (trampoline) is telling the matter (marble) how to move. This is different than Newton’s theory of gravity, which implies that the earth is attracting or pulling objects towards it in a straight line. Of course, this is just a simplified explanation; the real physics can be more complicated because of other factors like acceleration.

Albert EinsteinCourtesy none
So what is the point of all this high-tech gravity testing? First of all, our current understanding of the structure of the universe and the motion of matter is based on Albert Einstein’s Theory of General Relativity; elaborate concepts and mathematical equations conceived by a genius long before we had the technology to directly test them for accuracy. The Theory of General Relativity is the cornerstone of modern physics, used to describe the universe and everything in it, and yet it is the least tested of Einstein’s amazing theories. Testing the Frame-Dragging Effect is particularly exciting for physicists because they can use the data about the Earth’s influence on spacetime to measure the properties of black holes and quasars.

Second, the data from the GOCE satellite will help accurately measure the real acceleration due to gravity on the earth, which can vary from 9.78 to 9.83 meters per second squared around the planet. This will help scientists analyze ocean circulation and sea level changes, which are influenced by our climate and climate change. The information that the GOCE beams back will also assist researchers studying geological processes such as earthquakes and volcanoes.

So, as I gobble down another mouthful of leftover turkey and mashed potatoes, I can feel confident that my holiday weight gain and the structure of the universe are of grave importance to the physicists of the world!

Dec
02
2009

## Pain for Permanent Art work: Needles, Ink into skin Oooouch!

skin tattooing processCourtesy ....

More than 5000 years ago a new form of pain endurance for record, spiritual, and cultural artwork purposes had evolved."Tatau", which means to strike and mark something, also recognized in our modern days as tattooing. You may be wondering what is tattooing?Does it hurt?How is it done?Well, the process of tattooing a needle containing ink is injected into the dermis, which the deeper second layer of skin creating some type of design. The reason for it not puncturing into the top layer of skin called the epidermis is because the top layer of the skin tends to shed its cells more frequently than the second layer.Thus when getting a tattoo, it is permanent because your second layer of skin is more stable. The pain involved in getting a tattoo is personally based on your physical and mental tolerance, so if your skin is more sensitive then most likely it will hurt more because your nerves in your body pick it up faster than someone who doesn't have much sensitivity.
When getting a tattoo on the back of your arm vs. getting a tattoo on your elbow, which will hurt more? The correct answer is on the back of your arm, because it's closer to your major organs and arteries. Go to www.hellbenttattoo.com/tattoo/ to view the amount of discomfort to expect on the body chart. From recent experiences in getting tattoo's I feel as though all tattoos feel the same as far as pain wise. "I mean come on now a needle going into your skin.Yea it hurts at first but once your body adjusts to the pain it feels like the area your getting tattooed has gone numb and the only feeling is from the vibration of the needle.I have four tattoos in various parts on my body, and when getting each one I try to compare the pain difference to find out that there is no difference because you get use to it."

Nov
25
2009

## Monthly LHC checkup: Has the world been destroyed?

A concerned citizen preforms a simplified self test: Results are positive.Courtesy kevjblack
The Large Hadron Collider, the LHC, the World Destroyer, the Hula Hoop of God, the RC Matchbox Racetrack of Zeus, the Contraceptive Ring of Gaia herself… has been turned on.

You remember how concerned you were about this, right? You were worried that, based on what that friend said and what you read on that webpage, the activation of the LHC could be the end of the world, if not the universe.

Well, I know you’re nervous about what you might find, but I think there’s no avoiding it—it’s time for our regular self-check. I’ll walk you through it.

Stand up, and place your arms at your sides, palms in. Move your hands back and towards each other, keeping the palms facing in. When your hands have nearly met behind you, pull them forward and make a grabbing motion with your hands.

Did your hands go through thin air, or did they encounter something soft yet substantial? If the latter is true, we can all breath a sigh of relief—the LHC didn’t destroy life as we know it, and your butt is safe. For now.

The collider was actually turned on on Friday, although the first collisions from its accelerating beams of particles weren’t expected until early December. Much to the scientists’ surprise, collisions were detected as early as Monday. Check again if you need to, Buzzketeers.

If you’re looking for something to worry about, however, you might consider the following: the machine isn’t anywhere near full power yet. The protons involved in Monday’s collisions had been accelerated to the point where they had 450 billion electron volts. In the next few weeks, the LHC team will accelerate the particles up to 1.2 trillion electron volts, and, eventually, the facility should be accelerating protons to 7 trillion electron volts. When you’ve got protons heading each way, that means collisions will involve 14 trillion electron volts.

Yowza, right? I mean, the next most powerful particle accelerator, the Tevatron in Illinois, can only inject 900 billion electron volts into its accelerating particles—the LHC can do more than 15 times that!

But what does that mean? That sounds like a frightening amount of energy, so why doesn’t the Earth rumble and moan like a house in a storm whenever a large particle accelerator is turned on? It is a lot of energy, especially when you’re concentrating it into individual protons, which are, of course, very very small. But an electron volt is a very small unit of energy; it is defined as being “equal to the amount of kinetic energy gained by a single unbound electron when it accelerates through an electrostatic potential difference of one volt.” One trillion (that’s a million millions) electron volts—one fourteenth of the total energy of the LHC’s biggest possible collisions—is approximately equal to “the amount of energy of the motion of a flying mosquito.” That might be a deceptively small analogy—I’m sure it takes much much much more than a few bugs on treadmills to get the LHC powered up, and, again, that’s a lot of energy to be concentrated in a single subatomic particle racing at nearly the speed of light—but it’s an interesting comparison.

Strangelets and micro black wholes: 0; continued existence: 1.

Nov
09
2009

## Bird, bread break most complicated machine ever. Sigh. Will the world never end?

A killer agent from the future: Like the Terminator, but with bread!Courtesy Hillarie
So, I’m sure y’all have heard the news by now. The Large Hadron Collider, the largest and most elaborate scientific device ever built, has broken again. And it never even got the chance to end the world.

See, many people believe that the LHC’s attempts to catch a glimpse at the forbidden knowledge of the universe could, like a nerd’s efforts to peek into a locker room of large and aggressively athletic members of the opposite sex, go terribly wrong. Earth-endingly wrong. Sure, pretty much everyone who knows anything about it says that the LHC really isn’t dangerous in that way, and the odds that it would cause a chain reaction that would destroy the world are about the same as its chances of creating an army of teenage mutant ninja turtles. (There simply aren’t enough karate-practicing teenage turtles out there to mutate!) But that doesn’t seem to matter, because every time they try to turn that sucker on, something goes wrong, and we keep getting robbed of our first row seats at the end of the world (or, alternately, our seeding in the ninja reptile tournaments).

Do you know what killed the project most recently? I think you do, if you read this post’s headline. A bird. A little bird dropped its delicious toast on a piece of outdoor equipment (most of the LHC is deep underground). Presumably it was a bird, anyway. Whatever the case, a mystery slice of baguette found its way to some important equipment that was not baguette-proof, causing the machine to rise a few important degrees in temperature.

The damage caused to the machine wasn’t catastrophic. It shut down as the temperature in the circuit increased, which is a good thing, because if the LHC had been fully operational at the time, such an increase in temperature could have caused the superconducting magnets in the particle accelerator to become less-superconducting, and then all that energy from the near-light speed particles would… crash. Boom. But that didn’t happen, and the LHC should be up and running this winter.

Or…

A month ago, the internets were alive with discussion over the theory that the Large Hadron Collider was being sabotaged… by the future!

Naturally I ignored this news, because Science Buzz doesn’t credit nonsense like this with attention, and, what’s more, I’m familiar with the concept of someone at one point in time sabotaging his self at another point in time, and I know that it only goes the other way. Trying drinking something named after a cartoon at the end of an evening, and you’ll see what I mean.

I don’t totally get the idea behind this time travel sabotage theory, but the basic premise is that the universe, or “God,” or the fundamental forces of physics, or whathaveyou, aren’t into the possibility that the LHC could create a Higgs Boson. The Higgs is an important theoretical particle that sort of… ties the room together, if we’re calling the whole universe a room. Experiments at the LHC are trying to create conditions in which a Higgs might be observed. However, say a couple of respected scientist dudes, it could be that the Higgs is so “abhorrent to nature” that its creation would send ripples back in time to prevent it from being created.

It seems to me that there are still some brain-twisting complications in that theory. Cause and Effect, I think, are going to have difficult time sorting out whose clothes are whose in the morning. But… come on! A bird dropped some bread on the LHC! Since when do birds drop things on things? It has to be time-traveling mischief.

Oct
30
2009

For me, the greatest mystery in the universe is Lindsay Price, and how she continues to find work.: Not that great a mystery, I guess…Courtesy catechism

And, let’s face it, who hasn’t had the urge now and then? At the “Quantum to Cosmos” physics conference in Waterloo, Canada, seven physicists were asked, "What keeps you awake at night?" (Apparently, they meant “what issue in science” as opposed to love, money, or lack thereof.) The panel came up with some pretty heavy questions:

Why are the fundamental laws of nature the way that they are? There doesn’t seem to be any reason why they couldn’t be some other way. Are there, perhaps, other universes with other rules?

How does the Observer Effect work? This is a little deep for me, but apparently at the sub-atomic level, simply observing a particle over here can effect another particle thousands of miles away. How does nature do that?

What is the nature of matter, anyway? Especially the “dark matter” which is theorized to exist in outer space, messing up all our gravity calculations.

On a related note, will string theory ever be proven? String theory is the latest theory for how matter and energy interact at the sub-sub-sub-atomic level. And while it is very elegant and seems right on paper, no one has any idea how to conduct an experiment to prove or disprove it.

How do complex systems arise out of simple, basic particles and forces? You know, complex systems. Like life, the universe, and everything.

How did the universe begin, anyway? Physics can only take us back to a few fractions of a second after the Big Bang, a moment at which the universe was very small, very hot, and very dense. Before that, the laws of physics break down. No one knows how to describe the Bang itself, or how / why it happened.

Which brings us to, what are the limits of science? Science is based on observation and experiment. But, at some point, you run into ideas that can’t be tested. In theory, it’s entirely possible that there are other universes. But we’re stuck in this one—how would we ever know?

If anyone has answers to any of these questions, please send them to Canada ASAP. It sounds like there’s a bunch of scientists up there who could use a good night’s sleep.

Oct
21
2009

## SPORE Science

At The Science Museum, we should have Stuff About Science Fiction and where we came from.
There is a game Called Spore, Here read about it (Read about Spore Here) and the game is about evolution from a cell - creature - tribe runner - civilization owner - space explorer. It is really fun.
There is Spore, Then Spore Creepy and Cute, Then Spore Galactic Adventures for Computer.

75 words, cannot change
my email is [email protected]
________________________________
OK, I like Windows and Windows 7.
Buzz is Awesome.
If the science museum accepts that, email me above.

Sep
01
2009

From the loud chants coming from students for their favorite sports athletes in 1883, to the high extent of the first Liberty (stunt) in 1976. Cheer leading has went from loud chants to extreme stunts, which has increased the risk of injury. The increased risk for injury has came from the change in activity being done in cheer leading, because now they are starting to use more gymnastic like stunts which require a trained & stunt certified coaches. Without that the injury rates continue to increase.Cheer leading is the most dangerous female sport. The injuries range from fractures,broken bones, paralysis, & even sometimes death. It only takes one mistake to change someones life, so why not prevent it by taking every precaution to ensure safety & maintain all physical abilities. This teenage cheerleader suffered the pain due to the mistake of her teammates.I think there should be a regulation that prohibits bending the rules & regulations for cheer leading stunts because some coaches tend to bend them & that's how people get hurt. There should be rule that there needs to be more than two spotters because anything can happen.I personally stand by those who say cheer leading is more dangerous than football. Where do you stand? How is cheer leading a part of physics?Would you EVER take that risk of being thrown in the air?cheer or no cheer?

Aug
12
2009

## Random Questions Lightning Round!

The Puddleduck by lightningCourtesy Rick Elkins
Ahoy! Random questions have been piling up on the poop deck of the HMS Puddleduck, and I’ve been too distracted (mostly by birds) to address them. And now… now there are so many that I can’t give them the attention they each deserve! But I will try to give them something, as quickly and succinctly as I am able. It pains me to do so, but I’ll need a more nimble vessel for this sort of mission, and so I must temporarily abandon the Puddleduck for an outboard motor-equipped dinghy and…

DING

The starting bell?! Oh man!

Q: What’s the difference between regular food and organic food?

A: It’s all about how a food or its ingredients are grown. To be considered “organic,” the food has to be produced without the use of synthetic (man-made) chemicals. So that means that organic vegetables can’t have synthetic pesticides or herbicides used to keep bugs off them and other plants from competing with them. (Synthetic fertilizers can, however, be used.) Organic meat can’t come from animals treated with hormones or antibiotics.

When a food has a sticker on it saying “certified organic,” that means that it has passed the tests of a regulating agency. In the US, a product must be made of 95% organic materials to be labeled as “organic.”

Consuming organic food might reduce your exposure to potentially harmful chemicals, but, nutritionally, organic food isn’t really a whole lot different than non-organic food.

That answer was too long. I’ll never win the lightning round this way.

Q: Do you know why there are black holes in space? Are there any undiscovered plants [sic?] in space?

A: Black holes aren’t really holes in space, exactly. You might think of them as like really really really really heavy planets. Like, when a big star gets old, it can collapse on itself, getting small, but still having the same mass. (It’s like if you were to squish a marshmallow down into a little lump. It’d take up less space, but it would still weigh the same.) Even though they’re smaller, black holes still have lots of gravity—so much gravity, that they even pull light down towards them. So they look totally black.

Undiscovered plants? … Possibly? Undiscovered planets? Definitely. There are planets outside our solar system, but they're too small and far away to actually see. But there are other ways of detecting them, involving how a planet affects the way we see its star. But I can’t get into that, because this answer is already too long too.

Q: Have you found a dinosaur as big as a jumbo jet?

A: Me personally? No. Other people? Yes. Or… just about. So, the original jumbo jet, the Boeing 747 is about 70 meters long, and it weighs about 400,000 pounds empty The long necked, long tailed sauropod amphicoelias may have been about 60 meters long (196 feet), and it could have weighed as much as 135 tons. (That’s 270,000 pounds.) Not quite as big as a jumbo jet, but near enough that I think it should get the title.

Q: Why is the sky blue, and not green or black? It looks black from outer space.

A: The sky is blue because of all the methane gas in our atmosphere. The light reaching our planet has all wavelengths of color mixed together, but certain gases scatter certain colors more than others. Blue light gets absorbed by methane molecules and then scattered around, making the sky blue wherever you look. If you were to look at the sky from the moon, yeah, it would look black. That’s because there’s no atmosphere on the moon. No atmosphere, no gas, no gas, no light scattering. No blue. It’s explained better here

Q: Is your hair alive? If not, why is it always growin?

A: Nope, not alive. No nerve, no blood vessels, no activity. It’s always growing because structures in your skin called hair follicles are always making more of it. It’s like… like a string factory, making one long piece of string. There’s stuff happening in the factory, and the material the string is made of might once have been alive, but the string itself isn’t.

Q: How old is the oldest person in the world?

A: The oldest living person is Gertrude Baines. She’s one hundred fifteen years old.

Q: Where was the biggest snake that ever lived?

A: Columbia. 60 million years ago. Titanoboa cerrejonensis is extinct now, but it is estimated to have been about 42 feet long and 2,500 pounds.

Q: How long were the dinosaurs alive?

A: Dinosaurs lived during the Mesozoic Era, which lasted from about 251 million years ago to about 65.5 million years ago. The first dinosaurs didn’t appear until the late Triassic period, though, and that was about 230 million years ago. That means dinosaurs were around for about 165 million years, give or take a few. That’s a looong time, especially when you consider that humans have only been around about 2 million years (and, really, we modern humans have only been around for maybe 200,000 years.)

Q: How long can turtles live?

A: Oooh. I like this one. Large tortoises have been known to live well into their second century (one in a Calcutta zoo was actually reputed to be around 250 years old, but it died a few years ago). But how long could they live? Most animals (including people) start to automatically break down after a certain period. Cells don’t regenerate like they used to, and organs slowly deteriorate and fail. But turtles… apparently this doesn’t happen to them. They don’t seem to have this automatic shutoff built into them, so they don’t age like other animals—a hundred-year-old turtle could have organs as fresh as a teenage turtle. Unfortunately, they can still succumb to disease, or predators, or Foot Soldiers, and eventually the odds add up and they die. From something. Neat though, huh?

Q: How do you tell butterflies and moths apart?

Q: Where do elephants live?

A: Africa, India, Sri Lanka, Nepal, China, Southeast Asia, Sumatra, Borneo. And maybe some other places. And zoos.

Q: What are hiccups made of?

A: Hiccups are caused by the diaphragm muscle twitching spasmodically, causing your lungs to suck in air so quickly that your epiglottis (a little thing in your throat that keeps you from breathing in the food you swallow) snaps shut, halting the breath. But what are they made of? Babies’ dreams.

Q: How many explosions have you made while working.

A: It depends on your definition of “explosions.” Somewhere between zero and thousands.

Q: Does the science museum ever get boring?

A: No. Never. I have the scars to prove it.

Q: Can people put rabies in guns and shoot us with it?

A: Probably not in a normal gun. When a bullet is fired, it becomes very hot, and I think that could destroy any rabies viruses the in the projectile. But rabies is generally transimitted through saliva, so I wonder if one could put a sample of contaminated saliva in a ballistic syringe and fire it from a tranquilizer gun. It seems reasonable. I’d watch out for this, if I were you.

Q: Why do people cry?

A: Because living in the world can be very difficult and painful, and the frustration at our inability to cope with this sometimes manifests itself in our lacrimal apparatuses going bonkers.

Q: Do you catch snakes?

A: Not frequently, but sometimes, yes. In my last house, I had lots of holes in my bedroom floor, and sometimes garter snakes would come into the room through those holes. Considering how my room was on the second floor, I figured making the trip up to my bed wouldn’t be a big deal for them, so capture and release was necessary.

Here’s my fail-proof snake capturing strategy:

1: Spot snake in bedroom
2: Retrieve used pair of underwear from bedroom floor
3: Throw underwear over snake
4: Grab snake and underwear
5: Go downstairs, throw snake outside, keep underwear

This method is nice, because it temporarily gets rid of snakes, and it sends across the message that anything you don’t want in your room is going to get hit with your undies. (Some snakes, though, are perverts, and this may backfire on you.)

DING!

Hmm. That was a pretty weak lightning round. Real lightning is way faster than that, and it makes a stronger point. I’ll keep practicing.

Until next time, Buzzketeers, always keep dirty underwear on your floor, and not in your hamper, just in case you need it for snakes.

Jul
19
2009

## Science triumphs at boat races

USS SMM prepares to launchCourtesy Mark Ryan
I watched the Aquatennial's Milk Carton Boat Races today at Lake Calhoun in Minneapolis. One of the early heats included an entry from the Science Museum.
Houston we have a problem!: Most of the ship's hull and all of the bilge had to be removed to correct flotation problems.Courtesy Mark Ryan
I don't know who was sailing the ship but dang if science didn't prevail!

The boat looked sea-worthy enough on land but once it was placed into the water, it just didn't want to remain upright. But the hardy crew never despaired, and instead re-engineered the ship (ala Apollo 13) on the spot by removing the entire pesky bottom half and using only the deck to complete the race.
Science prevails!: The crew of the reconfigured USS SMM limps bravely and safely toward the finish line with honor and dignity intact.Courtesy Mark Ryan

They didn't win by any means, and at times it looked like they weren't using a boat at all, but they worked together to solve problems and got to shore safely.

Jun
28
2009

## The periodic table welcomes a new element with open arms

Want to hear the most exciting chemistry news for the month of June?? Yes…? All right then.

A few weeks ago, the International Union of Pure and Applied Chemistry (or IUPAC if you’re feelin’ lazy) officially recognized the element 112, discovered at the GSI Helmholtzzentrum für Schwerionenforschung, as the newest element to be added to the periodic table. That’s right kids, the periodic table is gettin’ a makeover.

The new element is approximately 277 times heavier than Hydrogen, making it the heaviest element to hit the periodic table since roentgenium (which coincidentally, was also discovered by GSI). It’s been a long road for 112. Way back in 1996, Professor Sigurd Hoffman and a team of 21 scientists at GSI created it with an accelerator. Six years later, they were able to produce another atom. Finally confirming the discovery, accelerator experiments at the Japanese RIKEN produce more atoms of 112.

How does an accelerator make an atom, you ask? Well, zinc ions are fired towards a lead target with the help of a 120-meter long particle accelerator. Once they hit, the zinc and lead nuclei merge in a nuclear fusion to form the nucleus of a new element.

Cool.
The accelerator: The target wheel equipped with lead waiting to be irradiated with zinc ionsCourtesy A. Zschau, GSI

And now for the fun part. Over the next few weeks, the scientists from the discovery team will deliberate on the name of element 112. After its been submitted to IUPAC, it will be assessed and then officially be crowned the newest member of the periodic team.