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Crosswordist's Handbook

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Science, education, medicine / Chemistry and substances / Chemical scientists

(3)

GAN - Germany

(4)

BERG - USA

DORN - Sweden

DEVI - England

CURIE - France

POTT - Germany

REICH - Germany

ETAR - France

(5)

BALAR - France

BEMON - France

KLAUS - Russia

KLEVE - Sweden

CROOKES - England

PEREU - France

PERIER - France

ROSCO - England

RAYLEI - England

SEGRE - Italy, USA

SODDI - England

TENAR - France

URBAIN - France

SCHEELE - Sweden

RAMAN - India

(6)

BRANDT - Germany

BUNSEN - Germany

VAUCLAIN - France

GIORSO - America

GREGOR - England

JAMES - England

CORSON - America

COURTOIS - France

MULLER - Germany

RAMSAY - England

RICHTER - Germany

BERMON - America

SEABORG - Sweden

KOSTER - Netherlands

NODDACK - Germany

Flerov - Russia

HATCHET - England

OERSTED - Denmark

(7)

WINKLER - Germany

BUCHERER - Germany

GADOLIN - Finland

DEBIERNE - France

DEMARCE - France

KIRCHHOF - Germany

KLAPROT - Germany

CRAWFORD - England

MEITNER - Austria

MOISSANT - France

NILSON - Sweden

TENNANT - England

THOMPSON - England

HIGGINS - America

ABLSON - America

(8)

CAVENDISH - England

MARIGNAC - France

(9)

ARFVEDSON - Sweden

WOLLASTON - England

GLENDENINE - America

KRONSTEDT - Sweden

MACMILLAN - America

RUTHFORD - England

FRANKLAND - America

STROMEYER - Germany

(11)

TURKELTAUB - Russia

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Latest news of science and technology, new electronics:

Machine for thinning flowers in gardens 02.05.2024

In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

Advanced Infrared Microscope 02.05.2024

Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>

Air trap for insects 01.05.2024

Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

Random news from the Archive

TI OPT3101 Optical Ranging Chip 03.11.2019

OPT3101 AFE is a new chip for determining the distance to an object by measuring the time of flight of photons. OPT3101 contains an analog part and an integrated LED driver. The device is connected to an external photodiode and an emitter such as LED, VCSEL or LASER. There is an I2C interface for outputting data on the distance to the object.

The microcontroller can directly read the distance data, so there is no need to do additional calculations on the external MCU. All processing and accounting for corrections for crosstalk, initial and temperature drift are performed on the chip. The device also provides temperature measurement and output from the built-in sensor. The OPT3101 can operate at up to 4000 measurements per second.

Given the high ambient light suppression ratio, the device can operate in bright sunlight (up to 130klx). The timing sequencer can be flexibly configured to provide the best balance of power and performance for a specific application.

The device provides range data consisting of phase, amplitude, and environmental measurements. The calibration subsystem supports phase data error compensation to eliminate errors caused by temperature and crosstalk.

When using a special reflector, the measurement range can reach 40 meters.

Features of OPT3101:

Measurement of distance at a distance of up to 15 meters;
Object detection and collision avoidance;
Choice of photodiodes and emitters;
Measurement frequency up to 4000 times per second;
16-bit output signal when operating at a distance of 15 m;
Flexible sequencer settings to increase the range up to 75 meters;
Support for three transmitter channels for multi-zone operation;
Operates with external illumination of the object up to 130 lux;
Distance measurement regardless of the reflectivity of the object;
Built-in LED driver with programmable current up to 173 mA;
Built-in temperature sensor for calibration;
I2C interface for control and data transmission;
Operating ambient temperature: -40...85°C.

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