Tech
Pluto contains icebergs
Containing Pluto New images taken by NASA’s New Horizons spacecraft have been revealed on ice volcanoes, including the size of Mauna Loa in Hawaii.
Pictures show a portion of the dwarf planet with volcanoes up to 4.3 miles (7 km) high, which was “relatively recently” active.
read more:NASA reveals the dark side of Pluto
Ice volcanoes have previously been found in many places in our solar system, including Saturn’s moon Titan and the dwarf planet Ceres. However, their discovery on Pluto is surprising. Previous research has shown that the interior of a dwarf planet does not generate enough heat to activate volcanic activity.
In the study, researchers from the Southwest Research Institute in Boulder, Colorado, examined images taken by New Horizons in the southwestern part of the Sputnik Planetia ice sheet.
This ice sheet covers an ancient plateau about 620 miles (1,000 km) wide and has large elevations with irregular sides.
Their analysis of the images suggests that the area may have been covered by icebergs – also known as icebergs – and that they were mainly water ice.
Glaciers range in height from a few miles to 4.3 miles (7 kilometers) and 6.2 miles (10 kilometers) in width to 93 miles (150 kilometers), some of which together form large structures, the group said.
In particular, the largest glacier known as the Wright Mons is about the size of Mauna Loa in Hawaii – one of the largest volcanoes on Earth.
Based on the topography of the region, researchers suggest that many volcanic eruptions may have occurred in the past, although the exact timeline is unclear.
This indicates that glacier activity is “relatively recent,” according to researchers.
This may indicate that Pluto’s internal structure is hotter than previously thought, in order to activate this cold volcanic activity.
In their study, published in Nature Communications, researchers led by Kelsey Singer write: “The existence of these massive features suggests that Pluto’s internal structure and evolution allowed for improved heat retention or more heat than was generally expected before the New Horizons. Water ice is the accumulation of rich matter in the latter part of Pluto’s history.
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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.
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:
- Click the Apple menu and select System Settings.
- Choose (Privacy and Security) from the sidebar and click (Camera).
- 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.
- 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.
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:
- Go to (System Settings), then (General).
- Click About, then System Report.
- Select Camera from the Hardware section in the sidebar on the left side.
- 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.
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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.
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.
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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!
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.
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.
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.
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.
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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