A superheated liquid can reach temperatures higher than its boiling point without actually boiling - similar to how liquids can be supercooled below their freezing point without solidifying. The photo sequence above shows how explosive the boiling of a superheated water droplet submersed in sunflower oil can be. Image (a) in the lower left shows the superheated droplet resting on the bottom of its container. Then droplet vaporizes explosively in (b), expanding dramatically. The bubble overexpands and and begins to oscillate around its equilibrium radius. This triggers a Rayleigh-Taylor instability in the bubble’s interface, creating the large lobes in (c) and enlarged in the upper image. Finally, the bubble fragments in (d). See the original paper for more on superheated droplet boiling. (Image credit: M. A. J. van Limbeek et al.; via @AIP_Publishing

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Three basic components are necessary for a geyser: water, an intense geothermal heat source, and an appropriate plumbing system. In order to achieve an explosive eruption, the plumbing of a geyser includes both a reservoir in which water can gather as well as some constrictions that encourage the build-up of pressure. A cycle begins with geothermally heated water and groundwater filling the reservoir. As the water level increases, the pressure at the bottom of the reservoir increases. This allows the water to become superheated—hotter than its boiling point at standard pressure. Eventually, the water will boil even at high pressure. When this happens, steam bubbles rise to the surface and burst through the vent, spilling some of the water and thereby reducing the pressure on the water underneath. With the sudden drop in pressure, the superheated water will flash into steam, erupting into a violent boil and ejecting a huge jet of steam and water. For more on the process, check out this animation by Brian Davis, or to see what a geyser looks like on the inside, check out Eric King’s video. (Video credit: Valmurec; idea via Eric K.)

afrodingus said:

Plague what are your thoughts on the mantis shrimp?

Cool guys. I wish I could fire superheated shots with my hand. Right through my computer monitor. The tech isn’t there yet.

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Just as long as I’ve got you….

Lightning does not travel in straight lines. Rather, it follows a chaotic, jagged path, formed as the huge charge separation built up in the sky suddenly breaks down. 

The majority of a lightning bolt is generally hidden in a cloud, much as an iceberg hides beneath the ocean. Lightning can be very large, spanning several kilometers, but it is formed in microseconds.

Thunder is a fractal sound. It is caused by the superheating of air. Because the pathway of the lightning bolt is a jagged fractal in 3D space, the time it takes to reach your ear varies, and the thunder rumbles in a corresponding fractal pattern. 

The path lightning takes is formed step by step as it moves towards the ground, turning air into plasma.


Hoy empieza mi serie Sereno en Tótem comics

Supermisticismo, pseudociencia, adjetivaciones grandilocuentes, memes y poesía, aventura y fiction-suit.
Un guerrero de la Luz en un mundo de matices.
Yo dibujo mucho y escribo un poco. Que lo poco sea concentrado, que Sereno alumbre y revele transmutando la maraña de impresiones en una historia que contar. Una de Superhéroes. Un mito post fin del mundo. Bienvenidos.

Una página por semana. Todos los martes en http://totemcomics-sereno.blogspot.com.ar/ 


Today starts my webcomic series Sereno. 
Supermysticism, pseudoscience, big words, memes and poetry, adventure and fiction-suit.
A warrior of Light in a world of shades.
I draw a lot and write a little. Let what little there is be concentrated, let Sereno shed light, reveal and transmute impressions into a story to be told. A story of Superheroes. A post-end-of-the-world-myth. Welcome…