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Bitcoin is a cryptocurrency, a form of electronic cash. It is a decentralized digital currency without a central bank or single administrator that can be sent from user to user on the peer-to-peer bitcoin network without the need for intermediaries. Bitcoin has been with us since 2009, when a person (or group) under the pseudonym Satoshi Nakamoto introduced a platform (Bitcoin, uppercase) that hosts a digital currency (bitcoin, lowercase). Bitcoin the platform is built on the concept of “proof of work” data that is expensive and time-intensive to produce but can be easily verified. In Bitcoin’s case, proof of work is created through the process of “mining.” To mine a bitcoin, a computer must complete a complicated algorithm, essentially going through the work of an extensive calculation in exchange for some newly minted currency. That piece of digital currency is worth whatever the market decides through supply and demand. Transactions are connected to a user’s Bitcoin address, ...

THREE OPTIONS FOR HIGHER STUDY +2 Courses Plus Two remains the preferred choice among Nepali students as over 85 percent of eligible students join grade 11 after completing their 10th grade examinations. As per the decision of the National Examination Board, a student securing a minimum of 1.6 GPA and at least a D plus grade in social studies can take up one of the five streams available in grade 11. Anyone aspiring to take up medicine, engineering or pure science in the higher secondary level needs to enroll into the science stream. A student needs to have a minimum of 2.00 GPA, in addition to securing C Plus in compulsory Science and Mathematics, and D Plus in Nepali, English and Social Studies to join the science steam. If anyone aspires to study management, they must have secured a 1.6 GPA, while also obtaining a D Plus grade in English, Mathematics Science, Nepali and Social Studies. For those wishing to take up Humanities, 1.6 GPA is the minimum average grade, while th...

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What is screen resolution? What about the numbers: 720p, 1080p, 1440p, 4K and 8K? When high-definition TVs became the norm, manufacturers developed a shorthand to explain their display resolution. The most common numbers you will see are 720p, 1080p and 2160p or 4K. As we’ve seen, the "p" and "i" tell you whether it’s a progressive-scan or interlaced-scan display. And these shorthand numbers are sometimes used to describe computer monitors as well, even though in general a monitor is capable of a higher-definition display than a TV. The number always refers to the number of horizontal lines on the display. Here’s how the shorthand translates: 720p = 1280 x 720 - is usually known as HD or “HD Ready” resolution 1080p = 1920 x 1080 - is usually known as FHD or “Full HD” resolution 1440p = 2560 x 1440 - commonly known as QHD or Quad HD resolution, and typically seen on gaming monitors and on high-end smartphones. 1440p is four times the resolution of 72...

Time crystals are one of the coolest things physics has dished up in recent months, because they point to a whole new world of 'non-equilibrium' phases that are entirely different from anything scientists have studied in the past. A time crystal or space-time crystal is a structure that repeats in time, as well as in space. Normal three-dimensional crystals have a repeating pattern in space, but remain unchanged as time passes. Time crystals repeat themselves in time as well, leading the crystal to change from moment to moment. A time crystal never reaches thermal equilibrium, as it is a type of non-equilibrium matter — a form of matter proposed in 2012, and first observed in 2017. This state of matter cannot be isolated from its environment – it is an open system in non-equilibrium. The idea of a time crystal was first described by Nobel laureate and MIT professor Frank Wilczek in 2012. Later work developed a more precise definition for time crystals.

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