The high cost of menstruation in Pakistan has drawn fresh attention after 25-year-old Mahnoor Omer filed a landmark case seeking to remove taxes on sanitary pads. The young lawyer and activist argues ...

Making a perfect lens that produces flawless images has been a dream of lens makers for centuries. In 1873, Ernst Abbe discovered a fundamental 'diffraction limit' in optics: whenever an object is ...

Abstract: A voltage-controlled pulsed current source (VCPCS) capable of generating current pulses with four different waveforms in the time domain is presented in this article. These waveforms are the ...

The Essentials library delivers functionality, performance and pushes the limits of what is possible with Khan Academy's Processing.js environment. Essentials is a one-of-a-kind library designed to ...

Many of us have heard about the ‘pink tax’. This is the extra money women spend compared to men on products both genders use. But have you heard of the ‘period tax’? Now, a 25-year-old Pakistani woman ...