The Beech is the latest addition to our collection of videos about trees, presented by ecologist Dr Markus Eichhorn. See them all at http://www.test-tube.org.uk/trees/
From playlist Guide to Trees & Plants
Our latest tree video deals with the Scots Pine. See the whole collection at http://www.test-tube.org.uk/trees/index.htm
From playlist Guide to Trees & Plants
In our latest look at trees, we investigate the white-barked birch. More trees at http://www.test-tube.org.uk/trees
From playlist Guide to Trees & Plants
The Larch (and an infamous swastika)
We finally do a video about the larch tree - and discuss a curious story about a swastika in a forest. More trees at http://www.test-tube.org.uk/trees/index.htm
From playlist Guide to Trees & Plants
Markus is at it again, this time checking out a maple tree. Thanks to Robin Wood for permission to show his maple mazers... Check out his work at http://www.robin-wood.co.uk/ All our tree videos at www.test-tube.org.uk/trees/ Presented by Dr Markus Eichhorn from the University of No
From playlist Guide to Trees & Plants
We look at the oak tree, and why our ecologist says it should lead to a new national holiday in the England. More at http://www.test-tube.org.uk/trees/
From playlist Guide to Trees & Plants
Tree Graphs - Intro to Algorithms
This video is part of an online course, Intro to Algorithms. Check out the course here: https://www.udacity.com/course/cs215.
From playlist Introduction to Algorithms
Birch Swinnerton-Dyer conjecture: Introduction
This talk is an graduate-level introduction to the Birch Swinnerton-Dyer conjecture in number theory, relating the rank of the Mordell group of a rational elliptic curve to the order of the zero of its L series at s=1. We explain the meaning of these terms, describe the motivation for the
From playlist Math talks
Excel Name Trick #6: Names COUNTIF & wildcards
Start File: https://people.highline.edu/mgirvin/YouTubeExcelIsFun/ExcelNamesSeries1-12.xls Finished File: https://people.highline.edu/mgirvin/YouTubeExcelIsFun/ExcelArrayFormulaSeries1-14Finished.xls Full Page With All File Links: http://people.highline.edu/mgirvin/excelisfun.htm See ho
From playlist Excel COUNTIF Function Formula Tricks
The Birch Reduction: Reducing Aromatic Rings with Alkali Metal and Ammonia
In this episode, we take a look at the Birch reduction and some recent applications. References (in order of appearance): J. Chem. Soc. 1944, 430-436. Also see: Pure Appl. Chem. 1996, 68, 553-556. For an ammonia-free Birch reduction, see: Org. Lett. 2018, 20, 3439-3442. For mechanistic in
From playlist Named Reactions
Modern Poetry (ENGL 310) with Langdon Hammer In this second lecture on the poetry of Robert Frost, the poet's use of iambic pentameter in "Birches" is discussed. Frost's anti-modernity is evidenced in his interest in rural New England culture and his concern with the lives of laborers in
From playlist Modern Poetry with Langdon Hammer (ENGL 310)
Hazel Tree (and water diviners?)
Hazel trees are often used by water diviners. Why?
From playlist Guide to Trees & Plants
Christmas: The Life of a Christmas Tree | History
From the farm all the way to your living room, take a closer look at the big business of Christmas tree production. HISTORY®, now reaching more than 98 million homes, is the leading destination for award-winning original series and specials that connect viewers with history in an informat
From playlist Holidays: Christmas | History
Using Mapper to Study Machine Learning Algorithms [Elise McMahon]
This video describes an adaptation of the Mapper algorithm to a machine learning algorithm. The method described is by Nathaniel Saul and Dustin Arendt and can be found here: https://sauln.github.io/blog/tda_explanations/ For a more detailed introduction to Mapper, see https://m.youtube.
From playlist Tutorial-a-thon 2021 Fall
Alaska’s forest fires are shifting the region’s carbon balance—sometimes for the better
It’s no secret that warming temperatures are transforming landscapes in extreme northern regions. In Alaska, where wildfires have burned through many old-growth spruce forests in the past half decade, deciduous trees—such as aspen and birch—are starting to take over. But little is known ab
From playlist Research Features
Birch reduction I | Aromatic Compounds | Organic chemistry | Khan Academy
The mechanism of the Birch reduction. Created by Jay. Watch the next lesson: https://www.khanacademy.org/science/organic-chemistry/aromatic-compounds/other-reactions-and-synthesis/v/birch-reduction-ii?utm_source=YT&utm_medium=Desc&utm_campaign=organicchemistry Missed the previous lesson?
From playlist Aromatic compounds | Organic Chemistry | Khan Academy
The Most Difficult Math Problem You've Never Heard Of - Birch and Swinnerton-Dyer Conjecture
The Birch and Swinnerton-Dyer Conjecture is a millennium prize problem, one of the famed seven placed by the Clay Mathematical Institute in the year 2000. As the only number-theoretic problem in the list apart from the Riemann Hypothesis, the BSD Conjecture has been haunting mathematicians
From playlist Math
Ask Adam Savage: Favorite Wood for Building Storage
Adam has done a LOT of shop infrastructure projects in 2020, which led to THIS question from Tested Patron Jaimy v.S., who asks, "What's your favorite type of wood for building tool storage? I think I've seen you generally use plywood. Any pro's and cons to the most general types of panel
From playlist Tested Member Q&A
This video introduces rooted trees and how to define the relationships among vertices in a rooted tree. mathispower4u.com
From playlist Graph Theory (Discrete Math)