Thursday, 23 January, 2020
The DIYer's Combo Deal - Save $9.90
WP_Post Object ( [ID] => 3388 [post_author] => 638 [post_date] => 2018-04-01 17:09:40 [post_date_gmt] => 2018-04-01 07:09:40 [post_content] => Three essential tools for every handyman or woman. Includes our magnetic WristBuddy, an extendable, flexible magnetic flashlight and our three function COB headlamp!

1 - Magnetic WristBuddy:

The magnetic WristBuddy keeps everything within easy reach whether you’re under the hood, squeezing into a bathroom cabinet, up a ladder or just nailing a few 4×2’s together! Designed to hold lots of screws, nails, nuts and washers, the magnets are amply strong enough to also hold drill bits, hex keys, bolts, screwdrivers and even spanners. Made from extremely durable 1680D Oxford cloth, your WristBuddy will be with you for years to come.

2 - Magnetic, Extendable, Flexible Flashlight

  The perfect tool for finding that lost screw that rolled under your workbench or the pins that dropped onto the carpet! This bright, COB LED flashlight extends to a full 60cm (2ft), has a flexible neck and a strong magnet in the lens surround. It's also a wonderful aid for anyone with bad knees.

3 - Three Function COB LED Headlamp

How often have you wished for better lighting while doing a job? All you needed was a third hand with a flashlight, right? This tough, fully adjustable headlamp uses the latest Chip On Board LED technology for maximum performance. Set it for bright, normal or strobe function with a click of the switch. Weighing just 65 grams (2.25 oz), including the three AAA batteries, our headlamp can be worn hour after hour. And because it's both shock and water resistant, it's great for camping and fishing as well as in the home and workshop.

Special offer:

Bought separately, these three items are currently selling for a combined total of $27.40. For this week only, we have packaged all three for just $17.50 including free delivery. Please note that there is a limit of three combo packs per customer. [add_to_cart id="3388"]   [post_title] => The DIYer's Combo Deal [post_excerpt] => Three essential tools for every handyman or woman. Includes our magnetic WristBuddy, an extendable, flexible magnetic flashlight and our high-powered COB headlamp! The perfect gift for any DIYer! Maximum of three combo packs per customer. [post_status] => publish [comment_status] => open [ping_status] => closed [post_password] => [post_name] => the-diyers-combo-deal [to_ping] => [pinged] => [post_modified] => 2019-03-11 00:01:10 [post_modified_gmt] => 2019-03-11 00:01:10 [post_content_filtered] => [post_parent] => 0 [guid] => http://deals.thediy.market/?post_type=product&p=3388 [menu_order] => 0 [post_type] => product [post_mime_type] => [comment_count] => 11 [filter] => raw )
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Google Claims Quantum Supremacy, IBM says No

Google Claims Quantum Supremacy, IBM says No

Google has made history, or so it claims.

The tech giant has announced that it has achieved a long-anticipated milestone known as “quantum supremacy.”

Researchers from Google say they have successfully demonstrated that a quantum computer is capable of performing a task beyond the reach of even the most powerful binary supercomputer.

“In reaching this milestone, we show that quantum speedup is achievable in a real-world system and is not precluded by any hidden physical laws,” Google’s researchers say in a paper published recently in the prestigious journal, Nature.

Google has announced that it has achieved a long-anticipated milestone known as "quantum supremacy."
Google has announced that it has achieved a long-anticipated milestone known as “quantum supremacy.” (Photo: IBM Research/Flickr)

The Quantum Controversy

The subject has been on the mind of Google CEO Sundar Pichai lately.

“The real excitement about quantum is that the universe fundamentally works in a quantum way, so you will be able to understand nature better,” Pichai told the MIT Technology Review recently.

Not surprisingly, the announcement has occasioned both doubt and debate in the highly competitive world of new technology.

Equally unsurprising, the main argument against Google’s claim comes from a rival company, IBM, which has been trying to build its own quantum computer.

In a paper posted online, IBM provides evidence that the world’s most powerful supercomputer can nearly keep pace with Google’s machine.

Google CEO Sundar Pichai (above) says quantum computing will one day help people “better understand nature.” (Photo: Maurizio Pesce/Flickr)

What’s the Fuss All About?

Most experts interpret quantum supremacy to mean the moment a quantum computer performs a calculation that – for all practical purposes – a classical computer cannot.

Ordinary computers perform calculations using sequences of bits composed of ones and zeroes. Quantum computers encode information using quantum bits, or qubits, which behave according to the peculiar laws of quantum mechanics.

Experts have said quantum supremacy could have huge consequences on communications, healthcare, transportation, artificial intelligence, weather forecasting, and financial services.

The technology involves matters of national security, as well. Some argue that quantum computers could break traditional internet security programs or other codes.

“Google achieving quantum computing is a huge deal,” says US presidential candidate, Andrew Yang. “It means, among many other things, that no code is uncrackable.”

US presidential candidate Andrew Yang says Google's achievement means that "no code is uncrackable."
US presidential candidate Andrew Yang (above) says Google’s achievement means that “no code is uncrackable.” (Photo: Stephen McCarthy/Collision via Flickr)

Sycamore and Summit

Google’s claim to quantum supremacy rests on a rather arcane experiment. The company’s researchers used a quantum processor code-named Sycamore to prove that the figures pumped out by a random number generator were indeed truly random.

The team worked out how long it would take Summit, the world’s most powerful supercomputer, to perform the same assignment.

Summit occupies an area the size of two basketball courts at the Oak Ridge National Laboratory in Tennessee. 

The results of Google’s calculations showed a dramatic difference in performance between the two machines.

Researchers from Google claim it took their quantum computer 200 seconds to complete a task that would have taken Summit, the world's most powerful supercomputer, 10,000 years to complete.
Researchers from Google claim it took their quantum computer 200 seconds to complete a task that would have taken Summit (above), the world’s most powerful binary supercomputer, 10,000 years to complete. (Photo: IBM Research/Flickr)

While Google’s quantum computer completed the task in 200 seconds, Google’s researchers say Summit would need 10,000 years to do the same thing.

This is where things get a little tricky. IBM maintains that Google has exaggerated its claim, saying that Summit could just about match Google’s quantum machine.

“We argue that an ideal simulation of the same task can be performed on a classical system in 2.5 days and with far greater fidelity,” says a team researchers from IBM. “This is in fact a conservative, worst-case estimate, and we expect that with additional refinements the classical cost of the simulation can be further reduced.”

“Somethingburger”

So this is the core of the disagreement between Google and IBM: “Do two-and-a-half years constitute a ‘practical’ timeframe in computer technology?”

Some experts think so, at least in this particular instance. “IBM’s claim looks plausible to me,” Scott Aaronson, a professor at the University of Texas at Austin, told the Atlantic.

However, even Aaronson says that’s not the point. What really counts is that Google’s machine solves a computational problem in an essentially different way than a binary computer.  

“It’s not an everythingburger, but it’s certainly at least a somethingburger,” says Aaronson.

In fact, the technological implications of Google’s experiments are enormous. Every time the company’s quantum computer grows by even a single qubit, a classical computer will have to double in size to keep pace.

Experts say every time Google's quantum computer grows by even a single qubit, a classical computer will have to double in size to keep pace.
Experts say every time Google’s quantum computer grows by even a single qubit, a classical computer will have to double in size to keep pace. (Photo illustration: Pete Linforth/Pixabay)

“It’s a great scientific achievement,” says Chad Rigetti, founder and CEO of Rigetti Computing, which is developing its own quantum computers. “Google called their shot.”

Useful quantum machines are many years away – and the technical hurdles are formidable. Even then, experts say quantum computers will probably beat classical computers only at certain tasks.

This chapter in technological progress reminds us that not all scientific revolutions arrive like thunder. Quantum supremacy, in particular, requires more nuance and sophistication than fits in a headline, as IBM’s argument points out.

“My answer on that would be, it is a technical term of art,” says Pichai. “People in the community understand exactly what the milestone means.”

What do you think?

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