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geek science

The particle zoo of 400 or so subatomic particles


Via Wikipedia:


In particle physics, the term particle zoo[1][2] is used colloquially to describe a relatively extensive list of the then known “elementary particles” that almost look like hundreds of species in the zoo.

In the history of particle physics, the situation was particularly confusing in the late 1960s. Before the discovery of quarks, hundreds of strongly interacting particles (hadrons) were known. It was later discovered that they were not elementary particles, but rather composites of the quarks. The set of particles believed today to be elementary is known as the Standard Model.

Michel van Biezen from ILectureOnline.com explains how many particles there are and what they do. Of the more than 400 subatomic particles most of the matter is created by a number of 20 or so elementary subatomic particles. The rest are composite particles.

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geek learn science

The future of information storage: DNA


Dr Robert Grass, Senior Scientist at ETH Zurich, and DR Reinhard Heckel, Postdoctoral Researcher, are working on a way to store information in DNA. DNA is very resilient and it can also withstand space travel as an experiment with plasmids in 2011 has shown us: a series of plasmids have been put on the outside of rocket TEXUS-49 and then sent to space and then back again. More than 70% of the plasmids were intact.

This is why Dr Robert Grass and Dr Reinhard Heckel are wanting to put the information of the whole world in DNA and then protest that DNA with a glass capsule. Glass is very resilient also and with fossilized DNA you can store information for millions of years. Paper, CDs, USB sticks will all be gone by year 1 million, but not our legacy, the information we now have.

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geek science

Yay. NASA is restarting supply to ISS. About time, guys! Video live NOW!

You can check now the status of the cargo which flies now to the ISS on NASA Ustream channel. The private company United Launch Alliance uses an Atlas V rocket to carry an Orbital ATK Cygnus commercial resupply spacecraft in order to get much needed cargo to the International Space Station (ISS) “following a pair of launch failures over the past year”.

It was about time that US started the reppluy mission. Until now only the Russians could send cargo up there and if they would have gone rogue, then ISS astronauts would’ve been in peril. It is always to have at least two choices when doing everything, because having two companies or states competing for the same thing will lead to better results.

Unfortunately NASA has had its funds slashed over the last decades and it struggles to make great progress with a tinier and tinier budget. Granted, they do have several hundred millions a year, but they would really need a 10 billion a year at least. Heck, I’d like to see a world in which countries like Romania can pay and fund NASA for at least 100 million a year in order to allow it to continue doing great things.

Go NASA and United Launch Alliance 😀 Once again, the private space companies are a proof of why US is the greatest country of them all.
Source.

Categories
entertainment geek

Batman versus Superman is not what you think it is

Via Business Insider. I was a bit angry of the fact that they mixed the world and got Batman to fight Superman. Realistically speaking, Batman would have no chance, but let’s leave this tot he details.

In fact, the upcoming Batman vs Superman movie is about them two fighting together with Wonder Woman to fend of a demon called General Zod. Way to cool to not see it when it hits the movie theaters.

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entertainment geek

Awesome: see GTA V’s Pinnacle mod in action


Via Extreme Tech. The Pinnacle mod for the GTA V video game brings big changes int he way the NPCs behave, cool new 4K textures and also changes the behavior of the rain. But the cars, look at those beautiful cars. Realism has rarely got so close in a video game.

You can see some pixelated places here or there in the video from above, but the level of detail is astonishing. It may take you 10 – 20 minutes to get the mod installed, but it is totally worth. Have fun!

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geek tech

Factory overcloked video cards: not really worth it


The guys as LinusTechTips have tested a row of video cards and compared the factory overcloked ones with the base referenced. Although there were some improvements, it didn’t really matter incredibly much.

If you can spare the money, then try to buy the next tier video card, but don’t just jump on to the flag ship 4K capable video cards if all you will do is 1080p video gaming. Seriously, try to make sure that you obtain the most bang for the buck while looking at the resolution your monitor currently uses. Try to obtain the best quality video gaming for THAT resolution.

Most of the flagship video cards are overkill if you will not use them for 2K or 4K gaming.

Learn from Jay how to match the video card you need to the display/monitor you use at home.

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geek science

Water was here all along


Really, water didn’t come from asteroids or meteorites. The water was here at the formation of the solar system. After the Earth cooled down the water could clump together into oceans and then allow life to form.

In fact, we have three oceans worth of water lying right now at 700 miles below Earths crusts int he form of hidroxyl attached to the molten rocks. That water is trapped inside a rock called ringwoodite.

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geek learn science tech

Anti-theft tags decomposed: how to they work?


Applied Science is a great YouTube channel where you learn about the practical concepts derived from science theories. He uses a ton of devices to explain the science behind things from around us.

In the video from above you can see the explanation of how anti-theft tags work. Their workings are based on a phenomenon called magnetostriction, the ability of a metal to change form when under a fluctuating magnetic field.

Basically, when you want tog get out of a shop and you have such a tab on your clothes you enter in the fluctuating magnetic field generated by the two beacons from the entrance. That field determines the metal from within the anti-theft tag to change form, to stretch and compress a bit, and thus those beacons can detect it.

The anti-theft tag has two small metal blades and a permanent magnet which connects the two. When the beacons generate the fluctuating magnetic field the metal blades oscillate at 56Hz and this is picked up by the beacons. Thief has been caught. If you use a coil you can demagnetize the tags and then you can use a permanent magnet to magnetize them again.

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geek learn science

What and how: fruits/vegetables and diverting an asteroid


What is the difference between a fruit and a vegetable? You call it a fruit when the part that you eat stemmed from the flower of the plant, then grew around some seeds. This way cucumber, peas, apples, pears and tomatoes are fruits. But what about vegetables? If you eat the root, the leaves or the stem, then that is a vegetable. Example of vegetables: cabbage, carrots, onions.

Now you know. Go annoy your friends who call tomatoes vegetables :))

Also, how do you divert an asteroid from it’s path when it is about to hit the Earth? Well, PBS Time Space explains how can you use gravity to simply move the asteroid away from our certain doom. You need to use a big enough rocket and send it to the asteroid. All you need to do is to make sure that you put the rocket close enough to the asteroid so that it has a small gravitational effect on it.

Then all you need to do is to simply move the rocket inch by inch away from asteroid’s path and the asteroid will follow. But how is this possible? Well, when two object come close together, then the gravity takes over and both objects will have a common gravitational point. Even a small rocket can influence a big asteroid due to the force of gravity. After enough time you push the asteroid just a couple of inch away from its path and avert a tragedy.

Also, the video from below has the calculations already done.

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geek

Assasins Kittehs: they kill with cuteness


The guys at Mr. TV Cow have created a cute video of kittens dresses as Assassin’s Creed main hero. You will never know what cuteness hit you when it comes. Awesome way to start the week, eh?