Yellow dot = It contains egg: Many people do not eat eggs. In such a situation, if there is a yellow mark on the packet, then ...

Almost all TV remote controls have red, green, yellow, and blue buttons. However, most people are unaware of what these four colored buttons do. You've probably noticed that almost every remote, ...

Red light is best for … anti-ageing Red light therapy emits the longest wavelengths (approximately 625 to 700nm) of any visible light, penetrating the skin at around 1 to 2mm.