The Kid Should See This

A match being struck as seen with Schlieren technique

From RMIT University, watch a match being struck and lit, captured by a technique called Schlieren flow visualization. From FY! Fluid Dynamics:

The schlieren optical technique is ideal for visualizing differences in fluid density and is an important tool for revealing flows humans cannot see with their naked eyes. In this high speed video, a professor lights a match. The initial strike generates friction and heat sufficient to convert some of the red phosphorus in the match head to its more volatile white phosphorus form. We see this in the schlieren as the cloud-like burst in the first several seconds. The heat from the phosphorus combustion ignites the sulfur fuel and potassium chlorate oxidizer in the match head to create a more sustained flame. During this period, wavy, smoke-like whorls of hot air rise from around the flame as buoyancy takes over. The upward movement of hot air draws in cooler air from the surroundings, providing the flame with an ongoing source of oxygen and allowing it to grow.

Follow this up with a match burning in slowmo, giant wingtip vortices in the fog as an airplane lands, and more Schlieren imaging: What does sound look like?

via Sagan Sense.

This feature is being tested. Saves will disappear if you clear cookies. Find saved videos here.

🌈 Related videos

What is fire? Is it a solid, a liquid, or a gas?

Rion Nakaya

Instant Ice Crystals – The Secret Life of Ice

Rion Nakaya

The beautiful physics and math of sneezes

Rion Nakaya

The Incredible Physics of Ants – ScienceTake

Rion Nakaya

Bubble freeze: Ice crystals form on a bubble in just a few seconds

Rion Nakaya

Use a 9-volt battery to break water into its elemental components

Rion Nakaya

ExpeRimental: How to Make Static Magic

Rion Nakaya

Matchsticks – How It’s Made

Rion Nakaya

Kawah Ijen volcano & The Mystery of the Blue Flames

Rion Nakaya

 
Browse the TKSST Video Collections

Get 7 smart videos delivered every week.

 

Subscribe