A net radiometer is an actinometer used for measuring net radiation at the Earth’s surface. The net radiation normal to the earth's surface is the difference between the total upward radiation flux and the total downward radiation flux.
Most of the sensor systems rely on light as the signal source. LEDs are often ideal as a light source due to their high efficiency.
The thermometer was developed over several years by a number of people - Cornelis Drebbel, Robert Fludd, Galileo Galilei and Santorio Santorio. The word thermometer was derived from two Greek word fragments – ‘thermo’ meaning ‘heat’ and ‘meter’ meaning ‘to measure’.
Researchers at Cornell University have used a small silicon chip to develop a microfluidic water sensor with a higher degree of sensitivity compared to other water sensors on the market.
By Kalwinder Kaur
14 Oct 2013
LUMO BodyTech, founded in 2011, has developed a wearable sensor and smartphone application to monitor an individual's posture.
By Kalwinder Kaur
10 Oct 2013
Broadly speaking, pyrometers belong to a class of thermometers that are used for measuring only high temperatures. However, today they have been modified to measure low temperatures as well.
A bolometer is a highly sensitive instrument used for detecting heat or electromagnetic radiation. It was invented by Samuel Pierpont Langley, an American astronomer, in 1878. This instrument was initially used in combination with a telescope to quantify infrared radiation.
Kiwi Wearable Technologies – a new start-up company - has developed a cutting-edge internet-enabled motion sensing device that can track your activity and is capable of making your living environment an automated experience.
By Kalwinder Kaur
1 Oct 2013
Selsyn or synchro is an electro-mechanical device used for the easy and precise transmission of angular data between two or more remote points. The readings may be provided in terms of mechanical position or as an electrical signal.
A rotary encoder, also referred to as a shaft encoder, is a sensor that generates an electrical signal in response to a rotational movement to determine or control the speed or position of a mechanical device.