The agitated microwave is the meaning of stimulated amplification of microwave radiation and is considered to be the "twin brother" of the laser , but the conditions are more severe. The maser is a microwave amplifying device made by the principle of stimulated emission of the radiation field. The basic physical principle is the concept of "stimulated emission" proposed by Einstein in 1917. The device can generate noise poles. Low monochromatic coherent microwave radiation. Previously, the most widely used maser was a hydrogen atom maser.
This time, Imperial College researcher Jonathan Bryson and colleagues demonstrated a continuous-wave room-temperature maser using a diamond with a nitrogen vacancy center. At present, masers have been used in deep space communication and radio astronomy, and this new maser will have broad application prospects in medical, security and quantum technology.
In the 1960s, solid-state masers were first developed, but they generally required low-temperature refrigeration and high-vacuum systems, so the application was relatively limited. Later, scientists developed room-temperature masers using organic molecular crystals, but their thermal and mechanical properties were relatively poor, and they only worked in pulse mode and could not work continuously.
A tablet computer is an electronic device that integrates mobile commerce, mobile communication and mobile entertainment, with a touch recognition LCD screen, handwriting recognition and wireless network communication functions. At present, the tablet computer has become the most popular electronic product.
1.In appearance, the tablet computer looks like a large-screen mobile phone, or more like a separate LCD screen.
2.In terms of hardware configuration, a tablet computer has all the hardware devices of a traditional computer, and has its own unique operating system, compatible with a variety of applications, and has a complete set of computer functions.
3.Tablet PC is a kind of miniaturized computer. Compared with traditional desktop computers, tablet computers are mobile and flexible. Compared with notebook computers, tablet computers are more compact and more portable.
4.Tablet PC is a digital notebook with digital ink function. In daily use, you can use the tablet computer like an ordinary notebook, take notes anytime and anywhere, and leave your own notes in electronic texts and documents.
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