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Insight - How Digital Thermometer works

Digital Thermometers are slowly replacing the conventional mercury thermometer due to the ease of taking reading. People often have the misconception that it contains mercury. Digital Thermometers are mercury free. Digital Thermometer These thermometers contain thermistor inside the tip which is used to measure the temperature. They provide quick and highly accurate results over the body temperature range.
 
These thermometers are easy to read with LCD display on them. They are equipped with beep alarm & memory function and can record a wide range of temperature. Doctor’s thermometer which are mostly used can read temperature between 94oF and 105oF (35oC and 42oC). It is three in one thermometer as it can record oral, auxiliary and rectal temperatures. 

Charge Coupled Devices (CCDs)

October 6, 2009, Stockholm, It was a historic moment for digital cameras when their shutters opened for the fraction of a second to capture the committee, CCD Icon award the coveted Nobel Prize to the ones who invented the electronic eyes.
 
Had it not been the duo Willard Boyle and George Smith, those cameras might still have been shuttering light on a photosensitive film and then drying them on rails in the dark room. By inventing the ‘Charge Coupled Device’ and predicting its applications way back in 1969, Boyle and Smith opened up the domain of solid state devices for imaging and memory applications.

Infrared Imaging or Thermal Imaging

Rainbows have always fascinated human curiosity. The appearance of various colors in the sky out of basically nothing was something science had been trying to understand from a very early stage. IR Imaging It was when Newton discovered the visible spectrum that other scientist got some firm footing to explore the deep chasms on the edges of the visible spectrum.
 
The visible spectrum is just a small fraction of wide electromagnetic spectra which extends both above and below it, much beyond the ocular limits of the human eye. When scientists started experimenting with the infrared light, they realized that there was an immense potential in this particular band for seeing things much beyond the realms of visible spectrum, owing to its greater penetrability and thermal properties. Infrared imaging evolved as a result of continual effort towards harnessing the power of infrared.

Insight - How Memory Card works

The Secure Digital (SD) Card or more commonly known as memory cards are small size storage devices that are specially designed to store and transfer data from audio and video consumer electronic devices like digicam, cell phones, voice recorders etc. They are known as secure digital card because they include a copyright protection mechanism that complies with the security of the SDMI (Secure Digital Music Initiative) standards. In this mechanism, a mutual authentication and encryptions are used to protect the card content from illegal usage.  
 
The notch in the tip right corner of the card helps to identify the right way of attaching with the device. As per the standards, each SD card is formatted with a File Allocation Table (FAT) file system, which allows every operating system to access the files in that system.

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