Rescue buoy for a submarine. Drawing, description

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Rescue buoy for a submarine. Tips for a modeller

Modeling

Ship modellers are well aware of how difficult it is to make a model of a submarine. A lot of time is spent on installing electronic electrical equipment, debugging it, setting up steering gears so that the boat sinks and rises in a timely manner. And what a disappointment for the crew and the shipbuilder when, for some technical reason, she goes under water and is no longer shown. Then divers and even divers look for it. And not always successful.

Ship modellers put various life-saving buoys on boats, but they are most often bulky and unreliable.

Submarine life buoy
Rescue buoy-machine: 1 - hatch cover "sugar receiver", 2 - sugar, 3 - axis of the "tongue", 4 - fixing "tongue", 5 - spring, 6 - rescue buoy, 7 - hull plating, 8 - submarine hull, 9 - silk thread, 10 - buoy shaft mesh

I offer a rescue buoy that runs on... sugar. Even a novice modeler can make it. To charge the rescue device, put a piece of instant sugar 28x18x11 mm in size into the compartment. The principle of operation of the machine is simple. Dissolving, sugar releases the fixing "tongue", the buoy emerges and indicates the location of the sunken submarine.

Author: A.Doroshenko

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Assessment of emotional stress in the cinema 29.10.2018

Researchers at the Chemical Institute of the Max Planck Society have come up with a chemically objective way to give films an age rating. They measured the composition of the air during 135 screenings of eleven different films; the total number of spectators was over 13 thousand people. A special chemical analysis device was installed in the ventilation system of the cinema hall to take air samples every 30 seconds. The authors of the work paid special attention to volatile organic substances, comparing their level with the genre of the film and the age of the audience.

It turned out that the emotional stress experienced by the audience while watching the film corresponds to the level of isoprene. It is best known as a natural rubber monomer and one of the products of petroleum refining. However, isoprene is also formed in our bodies during metabolism, accumulating in the muscles and escaping through the skin and lungs when our muscles work. If we watch something that makes us nervous, we start to change position, fidget, grab onto the armrests, etc. - and because of such muscular effort, isoprene flies into the atmosphere of the cinema hall.

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