About: Ibrar Ayyub

(Phys.org) —Astronomers studying two classes of black-hole-powered galaxies monitored by NASA’s Fermi Gamma-ray Space Telescope have found evidence that they represent different sides of the same cosmic coin. By unraveling how these objects, called blazars, are distributed throughout the universe, the scientists suggest that apparently distinctive properties defining each class more likely reflect a change in the way the galaxies extract energy from their central black holes.

New PC adapters offer unprecedented memory size with built-in signal generators Fairport, NY, USA:  Saelig Company, Inc. (www.saelig.com) has introduced the new PicoScope 6000 Series high-performance 4-channel PC oscilloscopes with deep buffer memory and a USB 3.0 SuperSpeed interface. With up to 500 MHz bandwidth on all four channels, and an industry-leading 2 Gsamples of […]

During the past few decades, the field of biology has dramatically expanded, incorporating many diverse sub-disciplines and specialty areas such as microbiology and evolutionary biology. However, teaching biology to undergraduate students has not kept pace with the changes, and core biology curriculum varies widely from university to university, and classroom to classroom.

SL030 module communicates through favorite I2C interface and supports a wide scale of secure RFID technologies on the frequency of 13.56 MHz. RFID modules Stronglink provide an excellent quality for an unbeatable price, that´s why from now you can find in our store another member of readers/ writers SL0xx module SL030. In many ways is […]

Switching DC/DC power supplies and regulators, regardless of whether IC, module, or chassis, are generally preferred over linear supplies, and with good reason. In general, they are much more efficient, resulting in reduced power use and cost, longer run time, and less heat to dissipate. (Note: There are cases where the linear supply may be […]

The first time I saw a POV (Persistence Of Vision) display was on a show called FAQ on TV. The POV display consisted of an oscillating shaft with 6 LED’s mounted on the end of the shaft. Since then I have always wanted to make one myself, I tried making one about 2 months ago […]

The Problem: You have a project that accepts commands using a 16 button keypad and want to perform validation on the commands as each character is typed.  But how? Here is the sample or typical protocol (commands) using only a 4 x 4 – 16 button keypad: XX@HH:MM# Where: XX is a value from 1-99 […]

A coronal mass ejection, or CME, surged off the side of the sun on May 9, 2014, and NASA’s newest solar observatory caught it in extraordinary detail. This was the first CME observed by the Interface Region Imaging Spectrograph, or IRIS, which launched in June 2013 to peer into the lowest levels of the sun’s atmosphere with better resolution than ever before

Introduction Power supplies are perhaps the most crucial elements of a battery-powered system. Knowledge of some basic regulator topologies will help you select and design the right supply configurations for your needs. This tutorial presents an overview of regulator topologies for battery-powered equipment. The discussion covers linear regulators, charge pumps, buck and boost regulators, inverters, […]

Block copolymers (BCPs) are the most attractive alternative to date for the fabrication of well-defined complex periodic structures with length scales below 100 nm. Such small structures might be used in a wide range of technological applications but current available methods are very expensive, especially when those structures present length scales under 20 nm.