A popular YouTuber has created the first functioning lightsaber, using propane gas burning at around 4,000°C to create a retractable plasma beam. Popular YouTuber 'the Hacksmith' has created the first ever functioning lightsaber (pictured) which creates a retractable plasma beam using propane gas which burns at around 4,000°C. Laminar flow keeps liquids in an organised flow Laminar flow is a physical phenomenon when a type of fluid (gas or liquid) travels smoothly or in regular paths. In laminar flow, sometimes called streamline flow, the velocity, pressure, and other flow properties at each point in the fluid remain constant. Laminar flow over a horizontal surface may be thought of as consisting of thin layers, or laminae, all parallel to each other.

Source: Daily Mail October 12, 2020 11:10 UTC