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geek science tech

A phone battery has an energy equivalent to 40 .44 Magnum bullets


Now, that is something new, but the fact that a phone battery can hurt you is not new. Do NOT ever, under any circumstances breck the battery apart. Since it has compounds of lithium in it and since lithium is very reactive with air, the batter will start burning and will explode.

The energy stored in a battery is the same as the one from 40 .44 Magnum bullets. The word says that such a bullet can rip you head off, but closer to the truth would be that it will rip a part of you head off. The same with the battery: it can burn and hurt you if you are not careful enough. Also, try not to speak at the phone while the phone is charging.

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geek tech

Computer fun: how a CPU is made, aspect ratios, case recommendation


A CPU is build in a very strictly controlled environment where the transistors are build by simply building them layer by layer though a process called photolithography. Today we have CPUs in which the transistors are 14nm big. It is an incredible step since the first ICs in 1947, but basically a CPU is build from dumb things which let current flow. A transistor does not know anything about how the entire CPU much like a cell in our bodies doesn’t know or understand how the entire body works.

A book is recommended in this case: But How Do It Know. It is about how a CPU is build. It is build from dumb things which, when taken together, can do a lot of work.

Noe, let’s get to monitors. Today’s aspect ratio is 16:9, but it wasn’t always this one. 4:3 was very popular with CRT displays. If you remember those displays, then you know they could offer great color contract and images.

Also, once we’re here, you might want to take a look at what video cards are best depending on the display resolution you have. A great shift int he way the guys at Tom’s Hardware are making their reviews.

Now, if you want a quiet and a cool case for your computer, then why not get your hands on BeQuiet Silent Base 600 PC Case. Linus reviews it below:

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geek learn science

Arabic numbers: why are they shaped like that?

cifre-indiene-unghiuri
In the image from above you can see why the numbers are looking the way they look now. We can say that we chose style over function, but you get the idea. Number one should have only one angle, number two should have two angles and number three should have four angles.

Today we do not use that exact notation, but at least we can understand now why the numbers are shaped like that. Clever guys those Indians and clever guys those Arabs who brought these numbers over to us. Roman numbers are awful to work with.
Image via.

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geek tech

CPU history back to back: Intel vs AMD

It is about the modern processor history, mind you, the one since 1970s until now, not the one from 1826, when the differential engine was built or since 1600s, when a tax calculator was devised by Pascal or from way back before when the Chineze were using the abacus.

Intel first launches the 4004 CPU and then the 8086 with x86 architecture. After this it launched the 286, 386, Pentium I and so on.

Intel highlights:
– Intel 386dx = first to use 32 bit X86 processor, 33MHz, 4 GB RAM
– Intel Pentium = first to add MMX, multimedia extension
– Celeron 300A = first to let you overclock the processor
– Pentium III = speedstep, run the CPU at lower speeds when idle, add L2 cache, first over 1GHz
– 2002 = added hyperthreading technology
– 2004 = LGA type socket, contact pins on the motherboard, not on the CPU chip
– 2006 = Core Duo and Quad see the daylight, the end of “Gigahertz war”, added virtualization and turboboost, onboard videocard
– since then 10-15% improved performance each passing year

Now, AMD started by copying Intels 8080 processor, but then moved on to creating their own CPU and also developing X64 processors which them they licenced to Intel in order to further fuel the CPU wars:

AMD highlights:
– 1974 = AM9080 was a clone of Intel 8080
– 1976 = Intel licenced to aMD the X86 architecture
– 1996 = AMD K5 designed to fight with Pentium I
– 1997 – 1998 = AMD K6-2 captured a good chunk of the PC market
– 1999 = AMD K7/Athlon, first to run at 1GHz, used the PR rating system like 1900+ (relative to Intel processor speeds)
– 2003 = AMD lunches X86-64 architecture in K8 series (64bit processors)
– 2005 = multicore processing
– APU, FX series is created = APU has added video on board, FX for gaming, comparable to Intel

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ebooks geek tech

Computer goodies: history of AMD CPUs, quantum computers explained, how bitcoin works, 3D processors based on N3XT specs


There are simply too many news and videos to write about and I don’t have the will to write 3-5 long articles per day. Nor the time, actually. People have to work here, eh? But, instead I like to save the links to such videos and then post them with a short paragraph on TGTG, TehGeekTive.

It is a good time to live it. Well, when wasn’t it in the last 200 years of scientific and technological marvels? In the first video you will see Linus going through the AMP CPU history, from the first chips meant to rival Intel’s “286” up until current day. AMD started off as a company creating X86 CPUs for Intel and then went on its own path. I do hope they can keep it up!

What are quantum computers? Well, those are computers which use quantum bits, states of elementary particles which are unknown until you start measuring them. Only a number of people in the world know how such a computer should work, but you can understand more by looking at the following video:

Do you have any bitcoins? The bitcoin is a digital currency and it costs about $458 right now. Steve Gibson, from the show Security Now, has about 50 bitcoins from the days when everyone could easily mine these bitcoins. Now you need to have entire datacenters to be able to mine ie run the algorithms to mathematically spot the solutions which reveal new bitcoins.

Learn more from the following video:

I love the news section from the NCIX guys. They are always cheerful and bring us the top tech news of the day. There isn’t a single day without them. Today we learn that 3D processors aka “skycraper” chips based on N3XT specs have been developed by researchers at Stanford.

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entertainment geek

Mega sci-fi trailers: Independence Day: Resurgence and Star Trek Beyond


I know you’ve been waiting for an Independence Day sequel. Admit it. The first movie was too good for me to forget. It has action, humor and Will Smith. The sequel will not have Will Smith. His character dies in some stupid accident while the humanity is building a new fleet of war machines, but those are details.

The trailer will setup a pretty grim scene for the entire planet with more and more alien ships coming in and even continent-sized motherships ready to slam into the Earth. We knew they will return, we prepared, but will it be enough? Independence Day, take my money NOW.

The second trailer is for Star Trek Beyond. This new brave generation of young space travelers will face new dangers and test their limits. The only difference now is that they are taking a pretty heavy beating. Will they survive?

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geek learn science

Medical Tuesday: probiotics, aspirin, and metal vs. bacteria


You guys know that I, the one man blogger-army on TGT, like to learn a lot of stuff. And stuff is enough on the web. Today we’ll learn a couple of things from the medical world namely, that probiotics are good only when you had issues with diarrhea after an antibacterial treatment, and that you should not put too much faith in them. Yup, they’re good, but not a panacea, a remedy for ALL diseases.

Aaron Carroll is not only the host and writer of the series called Healthcare Triage, but he is also a medic and a researchers. Mark his words, because he speaketh truth.

Now, let’g go to aspirin. It can help with blood circulation and, in some cases, it is recommended to eat one pill a day for a while, but this isn’t, also, a panacea. Learn more about aspirin from Dnews:

Because of MSRA, bacteria resistant to medicin, we need to find new ways to kill off bad bacteria. This is where metals like copper and silver and also nanoparticles can help us fend off these bacteria. A good thing to do is to NOT use antibiotics when you do not need them:

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geek learn science tech

Sound tech and facts: how does a music box work, sound dampening, the science of music


The Engineer Guy has posted a new stunning video about the music boxes and how do they work. You HAVE to subscribe to his channel if you want to understand why engineers are a great creative bunch and why we owe them a great deal a respect.

Engineers are the link between scientists and regular people. They transform science into technology. In the video from above you see why a metal comb is a great choice when building a mechanical music box. How these metallic combs generate the sounds is explained by the way each comb teeth is vibrating. Did you know that if you add some weight to a teeth it will vibrate differently?

Music boxes. Awesome stuff.

Now Linus goes into the other direction and teaches us about sound dampening, ways to reduce the noise from around us. In the video from below you will learn about the four ways the sound is dampened: distance, noise cancellation (active anti-noise generators), reflecting/absorbing sound by using shapes and materials (passive noise dampening, also using sound proofing via insulated layers), and via quantum mechanics (creating materials which don’t allow sound to travel through them).

And now to the facts about the science of music from Mental Floss. You will find out about: music being on the same level as sex, enjoyable music will make us spend more, music helps in immune system function, loud music can lead to a better behavior, the brain acts similarly to music even though we have different taste in music.

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geek science tech

3 genius ideas: parking floating signs, water and air drone, tree shaker

parking-floating-sign-here
I have seen the parking floating point first on Facebook (direct link) and it features a simple balloon arrow pointing down with “Here!” on it. When someone gets to the parking place the car goes above the wire the balloon is connected to and the balloon is lowered. Neat.

Meet Naviator, a drone which can fly and which can also go through water. Created by the researchers at Rutgers:

The last one for today is amazing: a tree shaker that can catch the fruits. Looks like alien tech for a bit. It is called a mechanical harvester:

Here is a video of the mechanical harvester in action to go with the photos of the olive harvest posted earlier.

Posted by Owahanga Station on Tuesday, June 2, 2015

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geek learn science

Space edition: Earth without the Moon and the Mars Space Exploration Vehicle


Without the Moon we would have a short day, since the planet would spin faster. A day would be only 6 hours long. Also, without the Moon the tilt of Earth would vary so much that seasons would be wildly inconsistent from year to year. So, the Moon is very important.

Also, in this space edition we ask: how would you walk around on Mars in 30-40 years? Well, using the Space Exploration Vechile:

Read more about the Space Exploration Vehicle from PopSci.