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Today, when astronomy has returned to the school curriculum, any high school student (well, in theory, anyone) should know: the distance from our planet to the Sun is approximately 149.5 million kilometers. This distance is also called an astronomical unit.
But, it is clear that this answer somehow had to be obtained and astronomers took several steps to do this, stretching out for more than one millennium. Below - more about each step.
xially 2 march 2021, 19:26

imageApple has filed a patent for a charging cable that does not break at the connector thanks to the use of materials of varying hardness in the protective layer, according to the website of the US Patent and Trademark Office.
Apple admits that bending the cable near the connector causes unnecessary stress in the wire connection, causing the cable to fail. To prevent this, the company has developed a special design, which provides for the presence of a sleeve in the cable sheath, consisting of three layers of different stiffness. In the patent application,
Papay 11 february 2021, 10:47

Handbags are essential to females not merely due to the fact they need to have a thing to maintain all their points in, but mostly as it is actually a manner symbol like no other. Handbags is often seen over the catwalk and on streets, they can be utilized in several circumstances and they have unique kinds which can satisfy any shopper. Like several other factor in style, handbags are frequently pricey and those that happen to be to some degree inexpensive are already from design. This defeats the purpose of shopping for a thing fashionable.
sallyeerrecart 23 november 2020, 3:38

A web camera is absolutely necessary when connecting with friends via video call software like Skype or Google hangouts. But when the built-in webcam is your laptop has stopped working, what would you do? Send it to computer repair store or buy a new external computer camera? Actually the repair cost may be higher than a new external camera. And If you require high quality video call, it’s better to have a USB camera. You have many choices of a good desktop webcam. What you should do to change built-in webcam to external computer camera?

Disable Internal Webcam
Disable the internal webcam through Windows. Click in the top right-hand corner of Windows and select the "Search" charm, then type "device manager." Click on "Device Manager" under "Control Panel" to launch Device Manager. Expand the section beside "Imaging Devices" and then right-click on your webcam and choose “Disable”. After these process, your computer program like Skype is able to recognize your new pc camera.
ausdom 16 may 2017, 8:14

Surely, you paid attention to the computer using which the young John Connor hacked PIN-code to the ATM and the access code to the lab in Terminator 2. This computer was the Atari Portfolio. When the movie was showing in theaters in 1991, it seemed beyond the fiction. I was lucky to find it, and I want to share with you its features.
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Killer 4 february 2014, 13:02

The article will concern the work of “brains”, which operate the engine of your car or motorbike. I will try to explain as simply as possible and in general, what and how is going on.

What do these “brains” do and what are they for? Electronics is an alternative to other systems performing the same functions. The carburetor used to deal with fuel metering, the ignition used to be operated by the mechanical or vacuum advance measure of the ignition advance. In general it can be realized not by electronics alone and it used to be just this way for quite a long time. On the cars, motorbikes, petrol-powered saws, petrol generators and other places worked and keep working the same systems that are to substitute the injector.
Why was it needed to change anything? Why should the existed, proved and rather reliable system be repealed? It is quite simple – a pursuit of economy, ecology and power. Work accuracy of the written above systems is not enough for the supply of the desired level of ecology and powerfulness, electronic systems of the engine controls began to appear long ago.
Tags: AFR, injector, MAF
Killer 7 may 2012, 18:14

"I can send the IP packet to Europe faster than I can send a pixel to the screen. How f’d up is that?" John Carmack asked in his Tweeter. His tweet caused a broad resonance in the community, so Carmack explained that to measure the lag on Sony HMZ-T1 analog display he used a program that changes the contents of the buffer by pressing a button on the controller, and a screen with the video camera 240 fps. Then he counted the number of frames between pressing the button and changing pixel.
Skull 3 may 2012, 17:00

imageEven though I use an ultrabook for several months, I saw it from inside only recently.
(Yes, you understood correctly. This is the XXI century, and a remote access is available for both the ultrabook and an ordinary computer).
Thereafter, I was not interested in the technical specifications of ultrabook, but I wondered about its physical parameters, and they did not disappoint me. Ultrabook was really slim. It could be even hidden under a sheet of paper.
Its weight has exceeded all expectations. Yes, the ultrabook is light, but it is not ultra light. My Asus Zenbook UX31E (as well as other models, including the Lenovo IdeaPad U300s and Dell XPS 13) weights 2.8 puonds.
To be more precise it weighed before. We were able to reduce its weight by almost 1.1 pounds!
Pirat 27 april 2012, 15:24

MIT researchers have created a new camera that can acquire visual data at a rate of one trillion exposures per second (1 000 000 000 000 = 10^12). That’s fast enough to produce a slow-motion video of a burst of light traveling the length of a one-liter bottle, bouncing off the cap and reflecting back to the bottle’s bottom. The similar devices will be used in medicine and other branches of science in the future.
Tags: camera, MIT, shutter
Siera 14 december 2011, 15:31

We tested several configurations of disk arrays that are suitable for use in servers.
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We tested the following configurations:
    4 x 300GB SAS2 10K + RAID10 on a PCI-E 2.0 controller (Reference 4 x 300GB RAID10)
    PCI-E SSD 120GB MLC (Inexpensive PCI-E SSD 120GB)
    2 x SSD 120GB MLC + RAID0 on a PCI-E 2.0 controller with optimized firmware (Inexpensive 2 х SSD 120GB RAID0)
    4 x 300GB SAS2 10K + RAID10 on a PCI-E 2.0 controller + SSD MLC 120GB caching I/O (Hybrid 4 x 300GB RAID10 + SSD caching)

Spy 9 december 2011, 5:34
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