All of us use memory cards or hard drives to store our data. From pictures to important documents, we save everything in our backup devices. But, how can a small piece of hardware hold such a great amount of data? That too, without any power supply or computer connection. It is an … Read more
The batteries, whether of your phones or computers, lose their effectiveness over time. Especially lithium batteries have this terrible problem of losing the potential and capacity over time; they may even die altogether. In new batteries, ions move openly between positive and negative electrodes. But after a while, the electrodes lose their … Read more
All graphics shown on our computer screens are made of pixels. Pixel is a short term for picture element that refers to a single point in a picture. In a computer screen, pixels are the square-like element that forms an image. Monitors display pictures by dividing the screen into thousands or even … Read more
The ability of the computer to unset a bit depends on the particular kind of storage. In magnetic storage, such as a spinning-disk hard drive, it magnetizes the region or area that is storing the bit in the opposite direction. In practice, the hard drives write entire blocks at a time; however, … Read more
From burglar alarms to simple navigation systems for homemade robots, motion detectors are used in a variety of differing applications. Now the workings of a motion detector may appear simplistic at first glance; it looks for disturbances in its field of view and sends a signal when it detects one. However, a … Read more
The X-ray devices in luggage scanners are a bit more complicated than the X-ray medical imaging devices. In particular, they’re set up to identify and distinguish between different kinds of objects, whereas medical X-rays are pretty much only interested in one: bones. The trick is that not all X-rays are created equal. … Read more
Noise-isolating Noise-isolating headphones have earbuds or earmuffs that are able to block outside noise via a physical barrier. They block outside noise by providing a noise-reducing barrier. There are two types of noise-isolating headphones, and the first one is the over-ear that covers your entire ear using an ear pad, which has … Read more
In today’s age, the issue of privacy is constantly raised. People argue back and forth over how much control the government should be given. The fears of 24/7 surveillance and personal data being sold are prevalent everywhere, and almost always for good reason. Many people today turn to paying good money for … Read more