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Post has been Discarded

Getting Cold (with thermal imaging)

submitted by Aard Vark

(oritteropo)
5 years 1 month ago

YouTube description:

This short film documents five spontaneous endothermic processes with the help of a high-resolution thermal imaging camera. This the sequel to Getting Hot made in 2017 (https://youtu.be/VSyEWg10WjM).

Five spontaneous endothermic processes include liquid evaporation, ice melting, urea dissolving, the reaction between barium hydroxide and ammonium chloride, and the reaction between baking soda and vinegar.

(via laughingsquid.com)

7 Comments

BSR

So how do we use it to combat global warming?

Carefully

None of the endothermic reactions in this video have been suggested as methods to regulate global temperature, because even if they could be scaled up enough to make a global difference they don't address the systems which regulate the earth's temperature.

Some things which have affected global temperatures either up or down are:

Volcanic eruptions can cause global cooling, for example the 1991 Mt. Pinatubo eruption released around 20 million tons of sulphur dioxide causing global cooling of approx 0.5°C over the following three years (ref: https://earthdata.nasa.gov/learn/sensing-our-planet/volcanoes-and-climate-change and https://pubs.usgs.gov/fs/1997/fs113-97/ )
Increased rates of erosion of the right type of rocks can increase CO₂ absorption and reduce global temperatures that way, https://earth.stanford.edu/news/how-weathering-rocks-cooled-earth#gs.cmy3h0
Cyanobacteria, https://www.caltech.edu/about/news/evolutionary-accident-probably-caused-worst-snowball-earth-episode-study-shows-1026

Some people have proposed geoengineering to use those same mechanisms, for instance injecting sulphur dioxide into the stratosphere https://www.nature.com/articles/d41586-018-07533-4 or seeding the ocean with iron to fertilise algae https://phys.org/news/2016-03-seeding-iron-pacific-carbon-air.html although there are some concerns about both approaches.

BSR

So how do we use it to combat global warming?

ant

*music

Adding video to channels (Music) - requested by ant.

Moving this video to oritteropo's personal queue. It failed to receive enough votes to get sifted up to the front page within 2 days.

*discard

Discarding this post - discard requested by original submitter oritteropo.

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