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Mexican Physicist Solves 2,000-Year Old Problem That Will Lead to Cheaper and Sharper Lenses

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In most lenses, the center of the frame might be razor-sharp, but the corners and edges always appear a little soft. It’s something that’s been a problem for thousands of years within optical devices, with many researchers giving up hope until a recent breakthrough from a Mexican physicist, who has now developed a formula that will change how lenses are manufactured.

On paper, a curved glass lens should be able to redirect all the rays of light passing through it onto a single target known as its focal point. But in the real world, it just doesn’t work that way. Differences in refraction across the lens, as well as imperfections in its shape and materials, all contribute to some of those light rays, especially those entering the lens near its outer edges, missing the target. It’s a phenomenon known as spherical aberration, and it’s a problem that even Issac Newton and Greek mathematician Diocles couldn’t crack.

Today’s lens-building procedures come close to producing uniformly sharp images, but the lenses don’t have a perfectly spherical shape and can be very expensive and difficult to manufacture and design. However, all could be about to change thanks to Rafael G. González-Acuña, a doctoral student at Mexico’s Tecnológico de Monterrey who has managed to produce an equation that provides an analytical solution for counteracting spherical aberration. It’s all rather technical.

Rafael G. González-Acuña’s graphic equation

González-Acuña’s equation has been described as an “exact blueprint” for designing a lens that completely eliminates any spherical aberration. Regardless the size of the lens, the material it’s made from, or what it will be used for, this equation can decipher what is needed to design it to be optically perfect.

The breakthrough will revolutionize photographic equipment, as well as help improve scientific imaging, in devices like telescopes and microscopes. It’s said the advancement will allow companies to design and manufacture simpler lenses with fewer elements, benefiting the average consumer because it’ll mean lenses cost considerably less while offering improved image quality.

Source: https://fstoppers.com/news/mexican-physicist-solves-2000-year-old-problem-will-lead-cheaper-and-sharper-396628

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The Motivator

WhatsApp, Instagram, Twitter, YouTube: How to enable dark mode on Android, iOS?

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After a long wait, WhatsApp has finally enabled dark mode on its beta app for Android. While the feature is still under beta, it suggests that the stable rollout is not far anymore. Dark mode became a sensation in the industry recently and now almost every popular app and custom UI skin includes a toggle for a dark theme. Dark mode basically turns the light colours into darker or black shades. This not only makes it easier on the eyes during the night time but also helps in saving battery on phones with OLED panels.

How to enable dark mode on WhatsApp?

WhatsApp has just added support for a dark theme on the beta version of WhatsApp for Android. The feature will soon be made available to the stable version of the app. Once available, follow these steps to enable dark mode:

India Tv - How to enable dark mode, WhatsApp, Instagram, Twitter, YouTube, dark mode feature, dark mode update,

WhatsApp Dark Mode

  • Open WhatsApp
  • Head over to Settings > Chats > Theme
  • Tap on Dark and then press ok

Once done, you should see a dark theme across the app. Alternatively, you can also select System Default, which will switch the theme of the app depending on your phone’s theme.

How to enable dark mode on Instagram?

Unlike other apps, Instagram does not have a toggle for switching between dark and light modes. However, it does have a dark mode feature that depends on the phone’s theme. If you have a smartphone running on Android 10, you can enable dark mode in the smartphone’s settings page. On iOS, head over to Settings > Display & Brightness and select Dark mode. Once the dark mode is enabled in the system settings, the Instagram theme will automatically switch to the dark theme.

How to enable dark mode on YouTube?

India Tv - How to enable dark mode, WhatsApp, Instagram, Twitter, YouTube, dark mode feature, dark mode update,

YouTube Dark Mode

YouTube is another popular app that has also received the dark mode feature on all three platforms – Android, iOS and Web. On both mobile platforms, head over to the YouTube Settings > General and enable the dark theme option. As for the website, tap on your profile icon and then look for the dark theme option. Enable it in order to switch to the dark mode.

How to enable dark mode on Facebook Messenger?

India Tv - fb messenger

Facebook Messenger

While the Facebook app itself has not received the dark mode update, the Messenger app for Facebook has received the feature. In order to enable the feature on your Android or iOS smartphone just tap on your profile icon and then toggle the dark mode switch. 

How to enable dark mode on Twitter?

Twitter also has the dark mode feature on all the platforms including Android, iOS and Web. On Android and iOS, head over to the Twitter Settings by tapping on your profile and go to Display and Sound. Here, you can enable and customise the dark mode according to your taste. Alternatively, you can also tap on your profile icon and then tap the light icon on the bottom left corner to switch themes. On the website, tap on “More” and head over to Settings and Privacy > Display and select the type of background you want.

Source:
https://www.indiatvnews.com/technology/news-how-to-enable-dark-mode-whatsapp-instagram-twitter-youtube-android-ios-582577

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The Motivator

#5 Best Gadgets from CES 2020 That Will Blow Your Mind

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The thing about technology is that it never fails to disappoint it, and which CES, the world’s biggest tech show already happening in Las Vegas, we can’t help but appreciate how cool things technology can invent.

Renowned companies like Samsung, Lenovo, LG, Sony like every year has showcased the best of their products. While popular companies always have something to present, we also have companies who have showcased some really quirky products this year making us say, “Isn’t that just so cool?”

From the coolest laptops, phones, drones to foldable laptops, vertical TVs, there is something for everyone. In order to give you a quick update, we have curated a list of some exciting products that will hit the store in 2020. 

Samsung Galaxy Chromebook

If experience is something that pleases you Samsung’s Galaxy Chromebook might be the best Chrome OS machine to date. A rival to premium Google Pixelbook, this 2-in-1 device sets a higher standard in the mobile computing industry. The device has a 13.3 inch 4k AMOLED display and is powered by the latest 10th Gen Intel® Core™ i5 processor along with Intel® Wi-Fi 6. 

Expected Release and Price: 1st Quater of 2020 and will be approximately for INR 72,000.

Harman Kardon Citation Oasis

While the device resembles a lot to Amazon Echo Dot, the thing about Samsung’s Harman Kardon subsidiary is that they know how to set them apart. They have a built-in wireless charging which Echo Dot lack. Citation Oasis, a smart speaker has an LED clock, wireless charging and onboard Google AssistanSo with 8 hours of running time. To be honest, it does slow our two purposes. Some also believe that this would be the best smart clock out there. 

Expected Release and Price: INR 14,230

Suunto 7

Sunnota who are known for their sporty smartwatches presented a wearable that has smart features from Wear OS by Google. The device has a feature of an outdoor map of around 50+ km range letting you follow the location and a wrist-based control for music. The smartwatch also lets you track your heartbeat, has a built-in GPS, something that adventurous people would love. 

Expected Release and Price: 31 January 2020 and will be approximately for INR 34,260

LG Signature RX

When it comes to TV no one can beat LG. Every year the company overtakes its own invention. This year the developers have presented its first rollable TV. is set to hit the market for consumers later this year. The LG Signature RX’s marquee rolls up when your power it down. The AI processor directs your 4K picture behind the scenes and comes with the ability to develop with time. It does redefine your watching experience. However, if you are planning to buy it, the hefty price might make you think.

Expected Release and Price: Third quarter of 2020 and will be approximately for INR 42,89,220 ($60,000).

Welt Smart Belt Pro

A belt is a necessity! However, when it gets combined with technology it just adds more value to a must-have accessory. Welt Smart Belt Pro won the CES 2020 Innovation Awards for its new product and it is kind of a quirky invention. An update of the previous version and first of its kind, it comes with a prevent fall feature. The belt comes with its own app that lets you monitor things like waist size, eating pattern, sitting time measurement, step count and more.

Source:
https://www.entrepreneur.com/article/344895

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The Motivator

Samsung’s knife-wielding robotic chef is all flash

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Last year, we asked whether Samsung was getting serious about robotics. A year later, we’re not any closer to answering the question. This year’s presser played out roughly the same as last on the robotics front — all flash and little productizing to show for it.

Samsung’s approach to robotics thus far appears to be the model of many other big electronics companies. It’s flirtation with a technology that brings some sense of showmanship to the stage and booth. There’s no better example than Bot Chef. I got a preview of the tech in Samsung’s booth this week, pitched as “an extra set of hands in the kitchen.”

You can’t fault the technology for not being ready for prime time, at this point, of course. That’s not really the point yet. The question, however, is how serious Samsung is about bringing a pair of robot arms to kitchens across the globe to sauté tofu and liberally apply Sriracha. I would love to say “very,” and that the different demos were things the company was actively pursuing delivering on these products.

The futuristic theme of last night’s keynote, however, implied that the company is offering up hypotheticals for what a future could look like — not what it will. Even Ballie, which seems a more realistic addition to the company’s smart home strategy is also still very much conceptual. As with last year’s robot demos, I wasn’t able to get an answer from the company about how much of the robot’s functions were autonomous and how much were choreographed. It’s a cool demo regardless. But is it a serious one?

At the end of the day, I hope Samsung is getting serious about the category. The company has tremendous resources and a lot of smart people. If it really takes the leap, it could be a key player in making robotics more mainstream among consumers. For now, however, I’m unconvinced.

Source:
https://techcrunch.com/2020/01/07/samsungs-knife-wielding-robotic-chef-is-all-flash/

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