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Electronic Notebook Sharp WG-PN1

26.10.2019

Sharp has announced a new e-ink digital notepad that will allow you to sketch, take notes or make a list of important things in a more familiar form for adult users.

Sharp WG-PN1 has dimensions of 157 x 114 x 10,4 mm and weighs 210 g. The electronic notebook is equipped with a 6-inch display based on E Ink technology with a resolution of 800 x 600 pixels. Its body is made of gray plastic like many business laptops.

The notebook comes with a case that protects its display during transport. The lid also has a loop that is used to store the stylus. The device is powered by a lithium-ion battery that can be charged via the USB-C connector located at the bottom. It is claimed that the battery lasts for 10 days of use, but everything, of course, depends on the intensity of use.

The device can store up to 7000 pages of handwritten data. In addition, users can transfer these notes to a computer or smartphone in image format.

The Sharp WG-PN1 will go on sale in November for around $210.

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Ultra-precise atomic clock 24.02.2022

A group of physicists at the University of Wisconsin-Madison announced the creation of super-efficient atomic clocks. The device measures time so accurately that it loses only one second in 300 billion years.

The watch will enable more accurate measurements of gravitational waves, dark matter and other physical phenomena.

An atomic clock is a clock that tracks the resonance of the frequencies of atoms, usually cesium or rubidium. This allows such watches to measure time with high accuracy. So, NASA conducted an experiment in which the atomic clock Deep Space Atomic Clock worked in orbit for two years.

Atomic clocks work by keeping track of the energy levels of electrons. When an electron changes energy level, it absorbs or emits light at a frequency that is the same for all atoms of a particular element. Optical atomic clocks keep time using a laser finely tuned to this frequency, and require some of the world's most sophisticated lasers to measure time accurately.

In a new study, scientists have created a multiplexed clock that splits strontium atoms into a line in a single vacuum chamber. The team used a "relatively lousy laser," as the study's lead author Shimon Kolkowitz called it, which was still able to achieve levels of measurement accuracy close to a world record.

Scientists created two clocks and then tried to track the difference in their measurements. According to the researchers, two groups of atoms in different environments will "tick" at different speeds due to changes in magnetic fields or gravity. The team of researchers ran the experiment over 1000 times and over time noticed greater accuracy in the measurements.

Ultimately, the scientists found a difference in the speed of the two atomic clocks, which corresponds to them moving apart from each other by just one second every 300 billion years - a measurement of precise timekeeping that sets the world record for two spatially separated clocks.

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