FOOTPRINTS

  We all are aware of the term, "aircraft carrier". In basic terms, they are just an airfield, floating at the ocean, on which, airplanes can take-off and land. Unlike other naval vessels, these carriers are vital for a country's navy, to showcase its dominance over airspace at the sea. But, did you know that, the first true aircraft carrier, with a deck, capable of launching and landing airplanes, was built by the British Navy? In this article, we shall learn about the history, and the significance of an aircraft carrier, for a country's navy.  The History of the Aircraft Carriers. During World War I, the British Navy developed the first true carrier with a flight deck, the HMS Argus . It was built on a converted merchant-ship hull. The war ended before the Argus could be put into action, but the U.S. and Japanese navies quickly followed the British example. The first U.S. carrier, a converted collier renamed, the USS Langley , joined the fleet in March 1922. A Jap...

Ever heard of a bomb that sucks in oxygen from the surrounding air, to generate a high-temperature explosion, producing a blast wave, with longer duration than conventional explosive, and is capable of vaporizing human bodies? Well, such bombs do exist, and in this video, we shall see about the Thermobaric bombs, commonly known as the vacuum bombs. The vacuum bomb consists of a fuel container, and two separate explosive charges. When a vacuum bomb hits the target, the first charge ignites the container, and disperses the fuel, that mixes with oxygen in the air. The second charge detonates this fuel cloud, causing shockwaves and high-temperature explosion. The detonation of the cloud creates a massive fireball, sucking all the oxygen in the blast radius. The fuel cloud can penetrate unsealed or poorly-sealed buildings, making the bomb far more dangerous than conventional weapons. A vacuum bomb can be launched as a rocket or dropped from an aircraft.  The first reported use of vacuum...

Otto Wichterle: Czech chemist who invented the first soft contact lenses. Otto Wichterle was born on 27 October, 1913, in Prostĕjov, the Czech Republic (then, Austria-Hungary).  As a lover of science from his youth, Wichterle went on to earn his doctorate in organic chemistry, in 1936, from the Prague Institute of Chemical Technology (ICT).  He taught as a professor at his alma mater during the 1950s, while developing an absorbent and transparent gel for eye implants.   In 1961, Wichterle (a glasses wearer himself), produced the first soft contact lenses, with a DIY apparatus.  As the inventor of countless patents and a lifelong researcher, Wichterle was elected the first President, of the Academy of the Czech Republic, following the country’s establishment in 1993.  Happy birthday, Otto Wichterle!

The complete specifications, of the OnePlus 9 and OnePlus 9 Pro was revealed by T-Mobile ahead of March 23 launch. The OnePlus 9 series India launch, will be hosted on the same day as the global launch. OnePlus will host the launch of its flagship smartphone series, on March 23, 2021. The launch event will begin at 8.30 PM IST on March 23. It will be an online-only launch event, which can be viewed on the OnePlus YouTube channel.  OnePlus YouTube channel OnePlus 9 series launch event Image Source :  91mobiles OnePlus 9 and OnePlus 9 Pro specifications Twitter source of the revealed specifications Specification OnePlus 9 OnePlus 9 Pro SoC Snapdragon 888 Snapdragon 888 RAM 8 /12 GB 8 /12 GB Storage 128 / 256 GB 128 / 256 GB Memory Card Slot No No Display 6.55-inch AMOLED FHD+ 6.78-inch Fluid AMOLED QHD+ Primary Camera 48 MP + 50 MP + 2 MP 48 MP + 50 MP + 8 MP + 2 MP Secondary Camera 16 MP 16 MP Battery 4,500 mAh 4,500 mAh Source :  notebookcheck So far, various aspects of t...

Realme is a successful brand in India, as it offers better specifications than its competitors, in few price segments. Realme focuses on mid-range smartphones. Realme is now all set to launch its next Narzo series smartphones. The launch event is to take place on 24 February, 2021, at 12:30 PM IST (Indian Standard Time).                                Image credit :  MySmartPrice Some of the specifications of the upcoming smartphones in Narzo series have been leaked. Two smartphones are expected to launch in Narzo 30 series: Realme Narzo 30A and Realme Narzo 30 Pro 5G.                        Image credit :  hindustantimes According to the leaks, the Realme Narzo 30A is said to have a 6.5inch display with a water drop notch. It might be powered by the MediaTek Helio G85 processor. In terms of battery, as today’s smartphone users demand...

The Redmi K40 series will launch on 25 th February at 7:30pm local time (5pm IST).                                           Image credit :  gsmarena But today, Redmi General Manager, Lu Weibing, on Weibo teased some of the specifications of the upcoming Redmi K40 series. The camera on the K40 series is a triple camera setup with two large sensors and a small sensor.                                       Image credit :  gsmarena The K40 series will have Qualcomm Snapdragon 888 SoC. The series will have Redmi K40 and K40 Pro smartphones. However, earlier rumours suggested that the Redmi K40 Pro will come with Snapdragon 888 SoC, while the Vanilla Redmi K40 will feature the Snapdragon 870 SoC.                      ...

The Redmi Note series in India was very successful, as it offers better specs that its competitors at a very low-price range. The upcoming Redmi Note 10 and the Redmi note 10 pro is no exception. The Redmi Note 9 series launched in March 2020. Xiaomi has revealed the launch date for the Redmi Note 10 series to be on 4 th March 2021. But before its launch, we have some specifications teased by the company. Redmi India official page in twitter recently conducted a poll on the display to be present on the Redmi Note 10 series.                Image credit :  gizmochina The options were LCD with 120Hz refresh rate and AMOLED display. Later the tweet was deleted after 89% opted for AMOLED display. So, there is a chance that the display will be LCD. But a recent tweet reveal that it will be the brightest Redmi Note ever. This might be equal to the brightness of iPhone 12 pro, which has a typical brightness of 800nits.   Moving to the fing...