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Samsung Display Prototypes

23.05.2004

At the Seattle show, Samsung showcased a 17-inch organic EL panel designed for TVs.

Unlike its main competitors in this market sector, Samsung uses low molecular weight organic EL materials on a glass substrate to create panels. Samsung used laser layering technology to create the panel. The prototype has a resolution of 1600x1200 pixels and a brightness of 400 cd/m2.

The power consumption is 10W (when 30% of the display is white). The company also introduced a 2,2 inch organic EL panel for mobile phones for the first time. The panel has a QVGA resolution (320x240 ppi). The best mode for it is 180 ppi with a brightness of 150 cd/m2 when the power consumption is 150 mW.

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Water is divided into two different liquids 31.05.2018

Swiss scientists for the first time in history were able to separate water into two different liquids, consisting of two types of water molecules.

The spatial structure and some physical properties of water molecules depend on the spin of hydrogen atoms. If the spin of both atoms is the same, such a molecule is called a para-water, if they are opposite - an ortho-water. The exact differences between them are not yet known, however, in 2002, Russian physicists showed that the ortho-water condenses worse than the para-water.

The laws of quantum mechanics prohibit the direct transformation of one form of water into another, therefore, in any glass with liquid, separate groups of both para- and ortho-waters must be present at the same time. Nevertheless, the very first experiments showed that it is impossible to separate them, since some interactions between water molecules, the nature of which is not yet clear, sometimes cause them to change the spin of hydrogen atoms.

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This was achieved by turning water into a kind of steam - an extremely rarefied mixture of water molecules and argon atoms, which does not solidify even at ultra-low temperatures. Having prepared a sufficient amount of this mixture, the scientists passed it through a powerful generator of electrostatic fields. It split into two narrow streams of molecules, one of which consisted only of parawater, and the second only of orthowater.

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By bombarding this cloud and streams with ultraviolet rays, the scientists were able to track how both forms of water interact with diazenylium and uncover several interesting properties of para- and orthowater. For example, it turned out that parawater reacts much faster and more actively with N2H molecules, which indicates significant differences in their "behavior" and chemical interactions.

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