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Two of the latest SpaceX Raptor 2 rocket engines Two of the latest SpaceX Raptor 2 rocket engines exploded

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Two of the latest SpaceX Raptor 2 rocket engines exploded: it hit the video

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For the past few months, there has been talk that the first orbital test flight of the Starship spacecraft is being thwarted by officials delaying the environmental review of the Boca Chica spaceport. But no less problem (if not the main one) remains the difficulties with the latest rocket engines – Raptor 2. Recently it became known about bench firing tests, during which two Raptor 2 engines exploded one after the other.

SpaceX and its officials have not commented on the incident. Elon Musk himself has recently been busy buying Twitter. But, according to various sources, two “pops” were heard at the test site in McGregor, Texas, when testing Raptor 2 engines.

Two of the latest SpaceX Raptor 2 rocket engines exploded: it hit the video

The events were recorded by surveillance cameras of the NASA SpaceFlight amateur astronaut team. Videos of both explosions are posted in the corresponding section of the Reddit forum: here and here. It is customary at SpaceX to test rocket engines under extreme loads in order to check in practice the acceptable performance of structural elements. Therefore, during the tests, it is quite possible to expect anything, up to the destruction of the engines.

Raptor 2 engines, which have tens of percent more thrust than first-generation engines, should be the basis for regular Starship commercial launches. Experts believe that without a mass-produced, reusable and easy-to-maintain rocket engine in the face of the Raptor 2, SpaceX is in danger of bankruptcy, which is confirmed by Elon Musk himself.

Two engine explosions in a row on the test bed don’t tie in well with plans to start regular Starship flights in the coming weeks. It remains to be hoped that the company will share the details on this matter.

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Samsung will remember how to make smartphones with removable batteries. This feature is confirmed for the “indestructible” Galaxy XCover6 Pro

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Samsung will remember how to make smartphones with removable batteries

The Samsung Galaxy XCover6 Pro smartphone will offer not only a very well-protected case, but also an ultra-rare feature in the form of a removable battery.

Samsung will remember how to make smartphones with removable batteries.  This feature is confirmed for the

Earlier renders that appeared on the Web hinted at a removable back cover, but now the instruction manual has become available, where this is confirmed.

Slots for SIM cards will be located in the old fashioned way under a removable cover. To install or remove cards, you will need to remove the battery.

Samsung will remember how to make smartphones with removable batteries.  This feature is confirmed for the

Samsung will remember how to make smartphones with removable batteries.  This feature is confirmed for the

The smartphone will also receive a headphone jack, which is located on the top edge.

Recall, according to available data, the device will be based on SoC Snapdragon 778G. He will also receive 6 GB of RAM, a 6.5-inch screen and a dual main camera.

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Compiled a rating of all devices on Apple Silicon and not only. You can clearly understand which SoC in which device is capable of what

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Compiled a rating of all devices on Apple Silicon and

The other day, new Apple PCs based on the SoC M2 went on sale. The source decided to compare all the current computers of the company on different platforms of the Apple Silicon family, and at the same time add new iPads and several generations of iPhone to the comparison.

Compiled a rating of all devices on Apple Silicon and not only.  You can clearly understand which SoC in which device is capable of what

The comparison here is based on Geekbench data, which is not as interesting as using any applications for real tasks, but still it is very interesting to look at the rating in this form.

This rating is generally quite predictable, but for some the results may be quite unexpected. For example, in one of the tests, the iPad Pro on the M1 turns out to be faster than full-fledged Macs on the SoC M1 cut down on the GPU. Since this is a graphics performance test, it actually makes sense.

Compiled a rating of all devices on Apple Silicon and not only.  You can clearly understand which SoC in which device is capable of what

Compiled a rating of all devices on Apple Silicon and not only.  You can clearly understand which SoC in which device is capable of what

It will also be useful to clearly see how the M2 in the processor test is not very far behind the M1 Pro with an eight-core CPU.

But the gap between any of the M1 versions and the A15 Bionic is always very large, which is explained not only by the difference in configuration, but also by completely different power limits.

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“Ordinary bicycle arithmetic: 0.5 x 2 = 1 wheel.” American inventor built a “math bike”

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Ordinary bicycle arithmetic 05 x 2 1 wheel American

An American engineer-inventor, credited on YouTube as “The Q” (possibly a reference to the James Bond character who led the Q department and supplied “Agent 007” with useful spy stuff) posted a video in which he showed the creation of a “math bicycle “. According to legend, the author broke a wheel during another bike ride, and at that moment he came up with the idea of ​​​​creating a bicycle with two halves of wheels instead of one whole. Actually, the formula according to which the construction was carried out is included in the title of the video: 0.5 x 2 = 1 wheel.

Ordinary bicycle arithmetic 05 x 2 1 wheel American

I must say, the “math wheel” looks both unusual and spectacular at the same time. Judging by the video, it is quite possible to ride it, and not only on a flat road. Instead of a chamber in the halves of the rear wheel, a polyethylene pipe is used, attached to the rim with rivets – it certainly will not work.

The video is already being actively discussed on the Web – and even more: the “math bike” has become a meme. Its image is used by programmers and engineers to denote spectacular, but generally meaningless things and solutions.

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