82 views

3:01

Watch
- Search Videos
  
  Advanced search »
- Submit a New Video
Discuss
About
- Try clicking on the various channels to see videos posted to that channel - if you're into music you can click the Music channel to get more music sifts - go on and explore! Use the "hotness" when you have opened the channel link to get videos that have gotten a lot of votes, or use "newness" to have a look at the new sifts.
  When browsing sifts you like, have a look at the Related Posts list to see other related videos, click the tags under the video title to see more sifts tagged with the same tags or have a look at other sifts from the same user in the More Posts By list. If the sifted video is in a play list, have a look at the play list to see other interesting videos the Sift users have linked together.
  Enter the Sift Lounge to chat with online sifters about anything and everything, or read interesting posts in the Sift Talk forum.
  The Top New Videos list is always full of interesting, current videos. It is always recommended that you have a look through the Top New Videos, but also have a look at these:
  - Upcoming Unsifted Videos - active video submissions that neither are published to the front page nor archived to the submitter's personal queue
- Have you seen a really funny, surprising, scary, interesting, cute or in any other way extra good quality video?
  Post and share it here - VideoSift is the best video aggregator on the Web, where we share, discuss, promote, and interact with the best videos out there on the web. Post it here, and share it with the large community of video-interested users. And - you are guaranteed to find more very good videos here already!
  Mind you, we only share videos you discover that someone else has made; if you "self link," by posting a video you have made, have posted or have interests in, you risk the ban hammer - read the posting guidelines before posting. The sift is NOT for promoting your own videos - it is for sharing videos others have made.
  Submit a Video Now »
Login

Post has been Discarded

Getting Cold (with thermal imaging)

submitted by Aard Vark

(oritteropo)
4 years 5 months 3 weeks 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.

Discuss...

🗨️ Emojis & HTML

Enable JavaScript to submit a comment.

This website uses cookies.

This website uses cookies to improve user experience. By using this website you consent to all cookies in accordance with our Privacy Policy.