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Scientists can create an atmosphere around a black hole in the lab | Science

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Scientists can create an atmosphere around a black hole in the lab |  Science

The scientists developed the so-called “Massive Generator for Plasma Burst Experiments,” or “Magpie,” a pulsed energy generator designed to produce a pulse of current of up to 1.8 million amperes in 240 nanoseconds.

A research team led by scientists from “Imperial College London” has managed to create a rotating disk of plasma in the laboratory to simulate disks orbiting black holes.

And you know Black holes They are objects that cannot radiate anything because they have a gravitational force strong enough to pull anything that crosses their outer limits, even if it is light, the fastest matter in the universe.

Therefore, a person entering a black hole means being completely cut off from this universe, because anything he tries to send to us, be it a light or a radio signal or even his loud scream, does not leave the black hole, but bounces back inside it.

For this reason, a black hole appears to us in recent telescope images as a completely black ball orbiting around it, surrounded by luminous rings of matter located outside the black hole’s boundaries.

The matter surrounding the black hole may fall into it, or it may remain intact, or it may escape from orbit and travel into space at great speed, and is not yet known precisely by the scientists working on it. commodity.

Those rings that surround the black hole are called “Disk provided(accretion disk), are masses of material that rub so tightly against each other that, due to intense heat, they change to their plasma state, a state of matter in which electrons are separated from the nuclei of atoms. They are completely free-swimming, and the state of the object has unique magnetic properties that scientists pay to study carefully.

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A large generator for plasma explosion experiments (left) and a rotating film in a plasma machine on the right (Imperial College London)

Forming the circumference of a black hole

According to study In a new paper published by the research team in the journal Physical Review Letters, scientists have developed a pulsed power generator designed to generate a current pulse called the “Massive Generator for Plasma Explosion Experiments,” or MAGPIE. A maximum of 1.8 million amperes in 240 nanoseconds.

The generator has 4 amplifiers, each with 24 capacitors. At maximum power, the generator produces an output voltage of 2.4 million volts, which accelerates and accelerates 8 jets of plasma and collides with the periphery of the black hole.

According to Press release An official at Imperial College London said researchers will soon begin using Magpie to apply a leading theory in cosmology, which proposes that instabilities in the magnetic fields of plasma swirling around a black hole cause severe friction. Thus, they fall into the black hole.

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Apple has officially acknowledged the iPhone 15 Pro issue and is offering a fix

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Apple has officially acknowledged the iPhone 15 Pro issue and is offering a fix

Apple has officially acknowledged the problem with the use of a titanium frame in the iPhone 15 Pro and Pro Max models, which was done for the first time this year instead of a stainless steel frame like previous generations.

A few days ago Apple officially announced the launch of the iPhone 15, and as requests started pouring in to smartphone reviewers on the Internet, some of them reported noticing a change in the color of the titanium frame on the Pro and Pro Max models. , affected by fingerprints.

In a support document for iPhone 15 phones that Apple updated on Thursday, the company acknowledged that the new titanium frame on the Pro and Pro Max models is affected by fingerprints, and indicated that the fingerprints may “temporarily discolor.” of the Act.

But, thankfully, the company confirms that this is not a permanent case, as fingerprints can be erased like other iPhones to restore a clean finish.

Oils in human skin can discolor the titanium frame around the Pro and Pro Max phones, and wiping your device with a soft, slightly damp, lint-free cloth will restore the original appearance.

It’s worth noting that this only applies to the Pro and Pro Max models of the phone, as those are the two phones that come with the new titanium frame, while the regular and Plus models continue to use a stainless steel frame.

You may also see:

Video test.. What happens when you connect an iPhone 15 to an Android phone?

The best feature to protect the iPhone 15 battery that Apple switched from Android

Honor CEO: “iPhone 15 is disappointing for many reasons”

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It’s worth noting that some photos of the iPhone 15 Pro and Pro Max phones with visible fingerprints on the titanium frame have gone viral on social media, but those waiting for the phone should not worry about permanent damage. , but it is now registered. Officially from Apple.

Pre-orders for the new phones are scheduled to start shipping today, Friday, and after-testing reviews will spread widely over the next few days, showing the quality of the new phones and the materials used in their manufacture.

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Learn how to download iPadOS 17 on your iPad in 7 steps.

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Learn how to download iPadOS 17 on your iPad in 7 steps.


Written by Sama Labib

Friday, September 22, 2023 at 06:00 AM

Although we didn’t see anything New iPads This year, Apple unleashed iPadOS 17, a major update to its tablet operating system that promises new life to any latest iPad model you already own.

Once you install iPadOS 17, you’ll be able to enjoy your iPhone’s lock screen features on a bigger screen, as well as the interactive widgets that came to iPhone in this year’s iOS 17 update. Additionally, iPadOS 17 has some great improvements. for Stage Manager, and a new Health app. Tablet, greatly improved PDF support in Notes and background wallpaper from the original iPad era.

Like its iPhone counterpart, the iPadOS 17 leaves behind some old Apple iPads, but that’s to be expected.

If you’re still using an iPad Pro from 2015 or a 9.7-inch iPad Pro from early 2016, iPadOS 16 is the end of the road for you. The same applies to the fifth generation iPad released in early 2017.

However, the good news is that these are just the outliers and iPadOS supports every iPad released after June 17, 2017, including the 10.5-inch iPad Pro, the 12.9-inch second generation, and the sixth generation iPad in early 2018.

Of course, not all of the new features in iPadOS 17 will be available on these older models. Some features, such as feedback and gestures in video calls and screen distance, require an iPad with a TrueDepth camera, while others, such as auto-correction of the keyboard. Improvements, requiring more silicon, power are seen in newer models.

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Create a backup of your iPad

Before installing any major version of iPadOS, it’s always a good idea to make sure you have a backup. While update issues are rare these days, they’re not entirely unheard of, and if you’re affected by them, you’ll be glad to take extra precautions.

You can find instructions on how to back up your iPad.

It’s also worth noting that you can’t restore a backup created from a newer version of iPadOS on an iPad running an older version. If you use iCloud to back up your iPad, you may want to keep an extra backup of your iPadOS 16. Mac or PC. Private if you need to come later for some reason.

Only the three most recent iPad backups are stored in iCloud, and since your iPad is automatically backed up every 24 hours, your iPadOS 16 backup will disappear from iCloud.


How to install iPadOS 17 on your iPad

Since most people have automatic updates turned on by default, iPadOS 17 will find its way to your iPad — eventually. However, it may take some time to appear, so if you want to get it sooner, it’s better to go to the Settings app and download it manually. Here’s how.

Step 1: Open the Settings app on your iPad.

Step 2: Select General.

Step 3: Select Software Update.

Step 4: By default, your iPad will offer the latest update for whatever major iPadOS version you’re using. Although you don’t need to update it first, we recommend doing this as an intermediate step if you’re coming from an earlier version of iPadOS 15 or iPadOS 16.

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However, it’s safe to go straight to iPadOS 17 as long as you’re using iPadOS 16.4 or later, in which case you can move on to the next step.

Step 5: Under More available, select iPadOS 17.0.

Step 6: When the iPadOS 17 update appears on the next screen, select Download and Install and accept the terms and conditions screens that will begin installing it.

Step 7: It may take an hour or more to download, setup, and install iPadOS 17 beta on your iPad. Once this process is complete, your device will reboot and take you through the usual welcome and setup screens. .



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Xiaomi launches Redmi Note 13 Pro Plus phone

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Xiaomi launches Redmi Note 13 Pro Plus phone

Today, Xiaomi announced the Redmi Note 13 Pro Plus phone, which is launched with Dimensity 7200 Ultra processor chip and supports IP68 standards.

Follow-up – Yemen News:

The Note 13 Pro Plus phone features a 6.67-inch curved AMOLED screen with 1.5K display resolution. The screen also supports 120Hz refresh rate, 1800 nit brightness, HDR10 technology and Dolby Vision.

The camera design is different on the Redmi Note 13 Pro Plus phone, the rectangular design of the camera unit has disappeared and has been replaced by a traditional design for sensors that includes the main ISOCELL HP3 sensor with a resolution of 200 megapixels and a sensor. Size 1/1.4, 8 megapixel sensor with ultra-wide viewing angles and a third sensor with 2 megapixel resolution.

The camera supports optical stabilization and electronic stabilization, with “lossless” optical zoom up to 4x. The camera supports all three focal lengths.

The higher model in this version has a Dimensity 7200 Ultra processor chip, 16 GB of RAM and 512 GB of storage capacity.

The phone supports a 5000 mAh battery and comes with 120W fast charging technology. The phone runs on Android 13 operating system and MIUI 14 interface, and supports USB C port, 3.5 mm input for headphones, WiFi 6. Comes with Bluetooth 5.3, and IR blaster scanner.

Pricing for the Redmi Note 13 Pro Plus is slated to start at $273 for the 12 GB RAM and 256 GB storage variant.

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