This algebra and precalculus video tutorial explains how to solve exponential growth and decay word problems. It provides the formulas and equations / functions that you need to solve it. This video contains plenty of examples and practice problems.

My Website: https://www.video-tutor.net
Patreon Donations: https://www.patreon.com/MathScienceTutor
Amazon Store: https://www.amazon.com/shop/th....eorganicchemistrytut

Here is a list of example problems.
1. Population Growth of Rabbits on an island
2. Depreciation of car value
3. Appreciation of Home value
4. Exponential Growth Bacteria Problem - Finding how much will there if the bacteria doubles or triples every 20 minutes

Jim explores what are the most popular interpretations of quantum mechanics and how we might need to be a little more specific when we talk about ‘reality’.
Jim's book "Quantum Reality" is now available on Amazon: https://geni.us/OF5X

Watch the Q&A: https://youtu.be/Udy2Rs-t47o

Jim Baggott is an award-winning science writer. He trained as a scientist, completing a doctorate in chemical physics at the University of Oxford in the early 80s, before embarking on post-doctoral research studies at Oxford and at Stanford University in California.

He gave up a tenured lectureship at the University of Reading after five years in order to gain experience in the commercial world. He worked for Shell International Petroleum for 11 years before leaving to establish his own business consultancy and training practice. He won the Royal Society of Chemistry’s Marlow Medal for his contributions to scientific research in 1989.

This talk was streamed live by the Ri on 14 July 2020.

---
A very special thank you to our Patreon supporters who help make these videos happen, especially:
Justin, Scott Edwardsen, Atin Kothari, Paul Philippov, Jeffrey Schweitzer, Gou Ranon, Christina Baum, Martin Steed, Frances Dunne, jonas.app, Tim Karr, Adam Leos, Andrew Weir, Jan Všetíček, Michelle J. Zamarron, Andrew Downing, Fairleigh McGill, Alan Latteri, David Crowner, Matt Townsend, Anonymous, Kellas Lowery, Andrew McGhee, Roger Shaw, Robert Reinecke, Paul Brown, Lasse T. Stendan, David Schick, Joe Godenzi, Dave Ostler, Osian Gwyn Williams, David Lindo, Roger Baker, Greg Nagel, and Rebecca Pan.
---

Subscribe for regular science videos: http://bit.ly/RiSubscRibe
The Ri is on Patreon: https://www.patreon.com/TheRoyalInstitution
and Twitter: http://twitter.com/ri_science
and Facebook: http://www.facebook.com/royalinstitution
and Tumblr: http://ri-science.tumblr.com/
Our editorial policy: http://www.rigb.org/home/editorial-policy
Subscribe for the latest science videos: http://bit.ly/RiNewsletter

Product links on this page may be affiliate links which means it won't cost you any extra but we may earn a small commission if you decide to purchase through the link.

Lucie Green takes us on a journey from the centre of the sun to planet earth in a run-down of the latest solar physics research.
Watch the Q&A here: https://www.youtube.com/watch?v=0JkxTILe2Nk

Lucie's book "15 Million Degrees: A Journey to the Centre of the Sun" is available to buy now - https://geni.us/2oB8V

110 times wider than Earth; 15 million degrees at its core; an atmosphere so huge that Earth is actually within it: come and meet the star of our solar system.

Light takes eight minutes to reach Earth from the surface of the Sun. But its journey within the Sun takes hundreds of thousands of years. What is going on in there? What are light and heat? How does the Sun produce them and how on earth did scientists discover this? Since the Royal Institution was founded in 1799 our knowledge of the Sun has changed dramatically and much of the work was carried out at the Ri.

Join Lucie Green for an enlightening talk, taking you from inside the Sun to its surface and to Earth, to discover how the Sun works, how a solar storm can threaten the modern technology that society relies on and more of the latest research in solar physics.

Lucie Green is a Professor of Physics based at the Mullard Space Science Laboratory, UCL’s Department of Space and Climate Physics. She studies activity in the atmosphere of our nearest star, the Sun. In particular, she looks at immense magnetic fields in the Sun’s atmosphere which sporadically erupt into the Solar System.

Lucie is very active in public engagement with science, regularly giving public talks and appearing on TV shows like Sky at Night.

Subscribe for regular science videos: http://bit.ly/RiSubscRibe

The Ri is on Twitter: http://twitter.com/ri_science
and Facebook: http://www.facebook.com/royalinstitution
and Tumblr: http://ri-science.tumblr.com/
Our editorial policy: http://www.rigb.org/home/editorial-policy
Subscribe for the latest science videos: http://bit.ly/RiNewsletter

Product links on this page may be affiliate links which means it won't cost you any extra but we may earn a small commission if you decide to purchase through the link.

For many people in the world, they get their water supplied to them through pipes in their houses or apartment. However, for the rest of the world not hooked up to centralized water, they get their water through either private or public wells. ‘

Wells are some of the most essential components to developing a sustainable society. They provide a clean and reliable supply of water for drinking, bathing, and irrigation, even in locations where water on the surface is scarce.

Wells are essentially just holes in the ground filled with water, but they have more complexities than meets the eye. Let’s take a closer look at how wells work.

All images and videos courtesy of the creative commons or used in accordance with fair use laws. For questions or concerns, please use the contact section on our channel

Music:

Divider by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://chriszabriskie.com/divider/
Artist: http://chriszabriskie.com/

Brittle Rille - Reunited by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/r....oyalty-free/index.ht
Artist: http://incompetech.com/

Imagine transforming barren and empty landscapes into abundant food forests, layered with mangoes, legumes, garlic, herbs and corn.

SwaYYam in South India is doing just this by using agroforestry and alley cropping to revitalise soils, produce an abundance of crops and educate local farmers.

Agroforestry and alley cropping allow multiple crops to be stacked in one space, with tree crops providing shelter for low-lying plants and holding water in the soil with their roots. Fast growing biomass plants are used as groundcover and then as a mulch to feed the soil. Nitrogen-fixers make nitrogen available in the soil for other plants and a range of crops are grown for year-round food.

Swales and ploughing on the contour work with the land's orientation to maximise water capture. Deep irrigation and pitcher irrigation take water deep to the roots of trees, especially young sapling plantings.

SwaYYAm and their educational centre, Open Shell Farm, enables local farmers to learn regenerative farming methods, helping them create their own sustainable incomes through healthy soils and bountiful harvests.

SwaYYAm is a recipient of the 2020 Permaculture Magazine Prize: https://www.permaculture.co.uk..../articles/2020-perma

Malvikaa from SwaYYam shares the story of the project and some of their techniques in PM108: https://www.permaculture.co.uk/issue/summer-2021

Agro processing in Nigeria involves adding value to Nigeria agricultural produce. Value-added agriculture generates several billions in economic impact of a country. In fact, adding value to agricultural products beyond the farm gate usually has several times the economic impact of the agricultural production alone.
Agricultural producers receive a much smaller portion of the consumer’s naira than do food processors, especially processors who produce brand name items. Capturing those additional naira by adding value to farm or ranch products is a goal of many producers.
Agro processing in Nigeria today can act as a catalyst towards starting or commencing your own value added business. Visit www.exportbusiness.com for more information