First, as usual, watch this video:
(easter egg: look for the Doctor Who reference at 5:30)
Yes, that is the entire history and future of everything in seven minutes. Yes, that is kind of scary. But the inevitable heat death of the universe is, well, exactly that. Inevitable. Luckily, we will all be loooooooong dead before then, if that makes you feel any better. Actually I think I just made that worse. Oops.
Anyways, this brings up the interesting nature of time, and our lack of abil
As per usual, this will make more sense if you start out by watching a lovely
It's fairly simplistic, but introduces the topic.
So. Our universe is one with three dimensions of space and one of time. But why? Why doesn't it only have one dimension, or twenty? This is, of course, ignoring string theory/m theory (though I will likely make a post about that later). For a young 3D universe, our temperature is much more uniform than would be expected. There's also that whole pesky question of in
Totally undisclosed and unknown Physics C student here ready to inform you all about the most important parts of the year: my opinions. Well, there's no need to worry because you will be getting it whether you like it or not. No, really, it's required that I write this so that I can boost my grade and all.
So. Why am I in Physics C? Good question. It all started back when I was five years old......
No, but really, it's because I'm going into biomedical engineering and physics is kind of a goo
Oh jeez, more fluids? Thank god this post is more about the images than the workings behind it.
Back on point though - vortices are ubiquitous, seen wherever there are fluids. Which is everywhere in the universe. And since vortices act similarly no matter what the size, even the smallest of swirls can help us understands occurances such as cyclones and superstorms.
From smallest to largest, here are some examples:
In the wake of a water skeeter
Colored smoke in t
Recently I've come across a physics paper describing a certain way of time travel using the awesome theme of Doctor Who (as well as a Portal reference) to explain things. Explaining the name is something I'd rather leave to the creators of this theory though, so here's that:
The name refers to a bubble (a Domain) which moves through the spacetime at speeds greater than the speed of light (it is Achronal); it moves backwards in time (Retrograde to the arrow of time outside the bubble); and fin
Everyone loves Ted Ed. And everyone loves time travel. So what happens when you put them together?
Now, aside from the wonderful wonderful fact that the TARDIS makes a few appearances (making a certain Whovian very happy) as well as the DeLorean, what's actually going on? How does it relate to "time travel"?
Well, the velociraptor is here to explain this to you. The only constant in the entire universe that is consistently constant (yes that's a sentence) is the speed of light in a vacuu
Though we may not think of plants as moving things, we are sorely mistaken. The force of an opening flower may be very low - in the micro if not nano newtons - but as they exist and move, they are physics. Enjoy some beauty of nature, all dictated by the ever-present laws of physics.
photo credit to Yutaka Kitamura
The Standard Model theorizes that the Higgs Field switched on about 100 picoseconds after the big bang. Recently, though, physicists have theorized that it happened a little more gradually than "switching on" in a process more like water boiling. When these bubbles of Higgs Field met, they created massive shockwaves that would have come with sonic booms. In one of the most cool theories in the early universe, the noise would have sounded a lot like thunder.
(let's see if this co
I'm just going to leave this here without much of an explanation, other than the Hubble is incredible and... SPACE
This is the deepest view we've gotten so far, a group of hundreds of galaxies named Abell 2744 that is 3.5 billion light years away.
Ok, so. If you were to somehow make the grave mistake of falling into a black hole, what would happen? Obviously the answer is die. That bit isn't debatable. Sorry to burst your bubble.
However, there are three main ideas of what would happen. Either you would be spaghettified, toasted, or scrambled. Unfortunately, none of these options are as appetizing as they sound.
For a long time, physicists believed matter would be spaghettified upon entering a black hole. That's the legitimate term
Hooray for a cool
many physics applications!
Alright, so if you can't quite tell, these crazy NASA engineers built a complex rig in order to record cool things at 7,200 FPS for the hell of it. Though we're not doing optics this year, they had to do a lot of considering with that, buying special mirrors that lose less light with each reflection than your standard hardware store mirror. Sure, warping occurred, and the lens they used made the objects look farther away, but just look at how awe
Dear Mr. Fullerton: I am not crazy for laughing so hard during class about this. It's real.
Source: Saturday Morning Breakfast Cereal
What? What could meteorites have to do with skydiving?
If you watched that video, congratulations, you saw nothing! Well, unless you are extremely observant that is. Here's a slowed down gif so you can see what's going on a bit better.
That would be a meteor during it's "dark flight" phase. This happens when the meteorite reaches terminal velocity and starts falling straight down due to drag forces and blah blah blah and we have never gotten footage of this before. Which means tha
Not quite a physics post, but something really cool that came out recently
Now you know what it's like to see through the eyes of five different animals!
I'm still waiting to see a mantis shrimp though... 8 color receptors compared to our three? How does that even work? Where do they fit in the electromagnetic spectrum? Extra colors that is. Maybe within our lifetimes we'll be able to find out.
Optical illusions are awesome. That cannot be debated. Ever. Some of them are used to be thought provoking, street art that looks one way from one viewpoint and completely different if you move. Some are just to screw with your brain, like many of Escher's famous pieces.
This one is used to make you want to buy Ray Bans. No, seriously. http://www.youtube.com/watch?v=dhuUhaNIWLQ.
So why do these things look 3D to us? Courtesy of our lovely brains, which like to detect patterns where there a
We all know the standard shape of a mushroom cloud
It looks something like this:
The question is why do they look like this?
Well, as can be seen in this post, the less in-depth answer is a simple difference in density between the rapidly expanding gases and the rest of the air.
However, this is a physics blog after all, and so I'm going to get into the Rayleigh-Taylor instability. In the most understandable terms (though to be quite honest after reading up on it I still don't really
That title should say it all.
Okay, as per usual, beginning link to article (I get all of my blog post ideas from links my dad sends me)
We all know laser cutting is a thing. Or, if you didn't, you know now. Of course, there are many different ways of using laser cutting. You can vaporize things, crack them with thermal stress, "stealth dice" (one of my personal favorites), um..."melt and blow" (that's what it's actually called), and more. Using high energy photons and laserizing many dif
This isn't going to be a full out physics post, but this is just astounding.
Look at this. This used to be a living bird. It accidentally flew into this mirror-like lake with a pH of 9.5-10 and a high soda and salt content that caused it to calcify.
Nature is scary, guys.
Image credit goes to Nick Brandt, article here
With the Nobel Peace Prize in Physics for 2013 being given to those who worked on the discovery of the Higgs Boson, it only follows that the physics blog should have something on that.
This slideshow does a wonderful wonderful job of making the Higgs field relatable for the layman and explaining why it took so long to say why there is a "possible" discovery. Namely, it's impossible to find a Higgs boson straight out, but rather they have to search for its predicted decay pattern among billion
First thing you should do is watch this incredible video. I couldn't get it to embed, but it's a man using a hamster chasing a carrot to steer a 15 ton Volvo FMX to demonstrate the new Volvo Dynamic Steering systems.
Let's assume a hamster weighs about 4 ounces or about .113kg and that the angle of inclination of the plane of the steering wheel is around 15 degrees. Using fancy shmancy trig, we find the horizontal component of the force of the hamster by multiplying (.113)(9.8)(sin15*) or .28
I'll admit that this has more to do with chemistry than physics, but really when it boils down to it, everything is physics.
To celebrate that the snow is over (hopefully), let's watch how it grows in the first place
Quite beautiful, isn't it? Especially with the music and all. So why do they grow that way? Well, it all has to do with the formation of hydrogen bonds. Usually, when water goes below the freezing temperature, the bonds form a nice cr
Currently, we use a method called astronomical parallax to measure the distance from the Earth to various stars among our home galaxy and others. Well, we'll still be using it. Unfortunately, this post isn't about a literal tape measure from Earth to the stars.
The usual way of measuring distance has to do with observing angles as the Earth goes around the sun, as is illustrated below
But now, we have found a way to utilize the Hubble Space Telescope for yet another purpose: spacial scan
First and foremost, a video! Huzzah!
So, why do these bubbles evaporate into mist instead of freezing and shattering? Well, that is due to the properties of fluids and fluid dynamics.
Have I mentioned before that I'm really bad at fluids? The oil of the soap, the cold air, and the surface tension of the water/soap mixture all mis together with SCIENCE and create wispy frozen bubble clouds. Technical terms of course.
I really don't get fluids. They're just pretty.
So at first glance this sounds dumb. What is this post about? Well, since I can't get embed to work still, go watch this video.
If you're really too lazy to watch a youtube video, here's what it is: 32 metronomes all set to the same tempo (beat) but started at different times. Sounds simple. If they were on a static surface like a table, they would remain discordant forever. But that's boring. So they put the metronomes on a movable surface, and voila, they synchronized with each other.
I nearly forgot the story of the month! Or, at this piont, last month. St. Patrick's day to be exact.
Anyways, physicists have now detected direct proof of the big bang and, more specifically, inflation! I can't explain it very well, but my source is not cooperating, so I shall try. Because of the vast size of the universe, there hasn't been enough time for light and information to get from one end to the other. So how is it all the same temperature?
That's where inflation comes into play.