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Astronomers have discovered the remains of small planets swallowed by Jupiter

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علماء الفلك يكتشفون بقايا كواكب صغيرة ابتلعها المشترى

Scientists have discovered that the interior of Buyer It contains remnants of smaller planets, which during its expansion became as they are today, and the results came from the first visible view under the cloudy outer atmosphere of the planet.

According to RT, despite being the largest planet in the solar system, Jupiter has revealed very little about its inner structure. Telescopes have taken thousands of images of rotating clouds in the atmosphere above the gas giant, but these vortex storms, like Van Gogh’s paintings, act as a barrier to our view of what lies below.

In a new study, scientists were finally able to view Jupiter’s gas overview using gravity data collected from NASA’s Juno space probe.

This data helped the team to map the rock objects at the center of the giant planet, which revealed surprisingly numerous heavier elements, which Jupiter considers small planets or mini-planets (solid bodies inhabiting orbiting planets, disks), to grow to their current size.

Jupiter began its life with the force of gravity, which pulls rocks and gases from a great distance. It was mostly hydrogen and helium left over from the Sun’s birth, which created the largest gas-filled atmosphere.

The results of the study support the proposed theory that the center of Jupiter was formed by the absorption of many small planets and large space rocks that stretch for miles.

If left unchecked, these space rocks could evolve into rocky planets such as Earth or Mars.

“Since we can not directly observe how Jupiter formed, we need to combine the pieces with the information we have today,” Yamila Miguel, the study’s lead researcher, told LiveScience.

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“Here on Earth, we use seismic maps to study the interior of the planet using earthquakes,” Miguel explained.

But since Jupiter has no surface to place such devices, scientists have integrated data collected by sensors into vehicles such as Juno and Galileo to create computer models of Jupiter’s interior.

The sensors measured the planet’s gravitational field at various points around its orbit, and this data helped the team determine subtle differences in the planet’s gravitational force, which helped to locate the rock inside the planet.

“The Juno spacecraft provided very accurate gravity data, which helped control the distribution of objects inside Jupiter,” Miguel revealed.

Research shows that Jupiter contains 11 to 30 Earth-heavy elements (3% to 9% of Jupiter’s mass), which is higher than expected.

Jupiter only swallows small planets, Miguel said, explaining this high concentration of heavier elements.

New discoveries could change theories about the origin of other planets in the solar system, such as Saturn, Uranus and Neptune.

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Simple Ways to Fix Camera Not Working Problem on Mac

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Simple Ways to Fix Camera Not Working Problem on Mac


Apple Mac computers have a built-in webcam, which you can use to make video calls with friends and family through the FaceTime application, or participate in online meetings with various applications such as Zoom, Microsoft Teams, Google Meet, and other video conferencing applications. On a MacBook computer.

But sometimes, when using a particular application, the Mac computer camera may suddenly stop working and a message will appear saying that the camera is not connected. In this case, you can easily fix the problem by following the methods we describe below:

1- Close and restart the app:

First, you can close the application you are working on and try launching it again. This will help you fix any problems or errors that prevent the MacBook computer camera from working properly.

Using more than one Mac camera app at the same time can also cause this problem. This can be easily fixed by using the Force Quit option to close apps. To access this option, you can click the Apple menu, choose Force Quit from the bottom to display a list of active apps, and close them.

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2- Update the application and operating system:

Another simple solution to this problem is to update the apps and operating system on your MacBook to the latest version. Sometimes, the problem may be with the app and not with the MacBook camera. So check if the app is updated and if it is up to date then try uninstalling and reinstalling the app.

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On the other hand, make sure that the macOS operating system on your Mac computer is updated to the latest version. The importance of this is that Apple releases software updates to fix bugs and vulnerabilities that can prevent applications on Mac computers from working properly.

Additionally, you can try launching another app that uses your MacBook camera to make sure the camera is working. If it works, the problem is with the app, not the computer’s camera.

3- Grant the app access to the camera:

You may not grant access to the app you want to use the camera. So, to allow this app to access your MacBook camera, follow these steps:

  1. Click the Apple menu and select System Settings.
  2. Choose (Privacy and Security) from the sidebar and click (Camera).
  3. A list will appear with all the applications installed on your MacBook that require access to the camera. From there, turn on the toggle next to the app you want to use the camera for.
  4. After granting the application access to the camera, it must be closed and restarted for it to work properly.

4- Restart your Mac computer:

Restarting your Mac computer is one of the easiest ways to fix many of the most common problems you may encounter while using the computer, and it can also help fix a problem where the camera stops working.

To restart your Mac, click the Apple menu and select Restart from the bottom. After restarting the computer, launch the app you want to use the camera and make sure it works.

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5- Check if the camera light appears:

To check that your camera is working properly, launch any app that uses your MacBook’s camera: FaceTimeThen make sure the camera light is on.

Otherwise, you can check whether your Mac computer detects the camera or not by following these steps:

  1. Go to (System Settings), then (General).
  2. Click About, then System Report.
  3. Select Camera from the Hardware section in the sidebar on the left side.
  4. If you can see information about the camera model: Model ID and Unique ID on the right, it means that your Mac computer can detect the camera. If you don’t see these details, it means your computer is not detecting the camera.

https://www.youtube.com/watch?v=videoseries

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Lenovo introduces its ThinkCentre M90a Pro business computer

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Lenovo introduces its ThinkCentre M90a Pro business computer


revealed Lenovo announced the ThinkCentre M90a Pro Gen 4, which sets a new standard for business desktop computers. The company has designed this Windows 11 operating system to meet the needs of modern workplaces and content creators. Equipped with QHD resolution and smart features that enhance connectivity and privacy and are easy to use.

The ThinkCentre M90a Pro Gen 4 device delivers performance when needed, as the company provided advanced components including Intel vPro Enterprise with 13th generation Intel Core i9 processors, NVIDIA GeForce RTX 4050 graphics processing unit and 64 GB DDR5 random access memory.

The device has two M.2 slots for an SSD drive and an optional 2.5-inch hard drive, and is equipped with a Power Optimizer that uses machine learning to categorize tasks and maximize performance.

The ThinkCentre M90a Pro Gen 4 enables lightning-fast file sharing with Thunderbolt 4, which can reach speeds of up to 40Gbps and is capable of transferring videos and large files.

The system supports an additional 8K screen or two 4K screens, and can be equipped with external graphics processing units and storage drives, and it can also act as a screen when connected to other devices. The ThinkCentre M90a Pro Gen 4 has a 27-inch screen with QHD resolution and a brightness rate of 350 nits.

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The business desktop comes with TÜV Rheinland-certified Eyesafe 2.0 and Flicker Free features, and natural low blue light technology is built-in to reduce eye strain and fatigue.

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Lenovo also provided the ThinkCentre M90a Pro Gen 4 with a Thunderbolt 4 port, a USB Type-C port, five USB Type-A ports, a DisplayPort port, an HDMI port, an RJ45 Ethernet port, and an optional Thunderbolt 3 port that lets users. Share the screen as Thunderbolt display when connected via USB-C cable.

With this feature, users can share a second M.2 SSD drive with their laptop or PC at high speed data transfer rates.

The new system gains security and privacy using artificial intelligence and next-generation human presence detection with a radar sensor and RGB-IR camera. The all-in-one device allows for touchless entry and exit, which automatically dims the screen. A person behind the user.

The ThinkCentre M90a Pro Gen 4 includes a unique TPM 2.0 security chip for secure encryption, comes with ThinkShield to protect data and assets, and can block USB storage devices with Smart USB Protection.

Users get a set of 5-watt stereo speakers, a 5-megapixel webcam, and optional support for Windows Hello and human presence detection.

https://www.youtube.com/watch?v=videoseries

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Airless tires… developed in collaboration with NASA

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Airless tires… developed in collaboration with NASA

Bicycle tires may have seen little technological development over the past decades, especially in terms of design, but a recent innovation could change this trajectory and confirm the adage of “reinventing the wheel.”

American company Smart Tire, in collaboration with NASA, announced a new model of airless tires that innovatively uses the ability to remember their original shape when exposed to pressure!

The new frame consists of a wire made of nitinol, a combination of nickel and titanium (a metal).

What’s new?

Unlike many traditional runflat tires, which often come for rider comfort and are criticized for their stiffness, rolling resistance and high effort required when pedaling, inside the new tire is a coiled cord called a “medl”. In rubber tire design..

This wire is NiTinol, a combination of nickel and titanium, which is unique in its combination of strength (due to the nickel) and rubber-like elasticity.

The tire’s exposure to pressure causes deformation of its shape, but it returns to its original state due to the materials it is made of. This feature allows Metl tires to provide the same compression and rebound dynamics as conventional pneumatic tires.

Combining titanium with the flexibility of rubber provides shock absorption and durability thanks to NASA’s Nitinol (MET) technology.

Other benefits

Coating the Nitinol spring with a polyrubber material creates transparent sidewalls and makes the tire tread (the rubber on the tire in contact with the road) flexible.

It is also worth noting that a metal tire requires half the amount of rubber as a regular tire. Although its tread needs to be replaced after 8,000 to 12,000 km, the basic tire is designed to last the life of the bike.

The pressure causes the nitinol to initially deform, but it eventually returns to its original form (the metal).

Technology inspired by NASA

This innovative approach is called “SMART” (Shape Memory Alloy Radial Technology) and aims not only to redefine the quality of bicycles, but also to extend it to a wide range of off-road vehicles.

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Although this technology was originally designed by NASA to address the challenges faced by extraterrestrial exploration, particularly missions to Mars, it has found a transformative application on Earth.

Running Tires (Metallic)

Experts say these futuristic designs could offer flexibility in tightness by allowing controlled air inflation, making them act like compressed air.

Such advances in tire technology, eliminating flat tires, regular monitoring of air pressure and reduced maintenance requirements, represent a major advance in the world of cycling.

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