Bozeman Science
Entropy
In this video Paul Andersen explains that entropy is simply the dispersion of matter or energy. He begins with a series of video that show the natural direction of processes. According to the second law of thermodynamics the entropy may...
Bozeman Science
Exponential Growth
Paul Andersen explains how populations experience exponential. He begins by address the major players; N (population size) and r (growth rate). He models population growth in rabbits through four generations. He then shows you how to use...
TED-Ed
TED-ED: Buffalo buffalo buffalo: One-word sentences and how they work - Emma Bryce
Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo' is a grammatically correct sentence. How? Emma Bryce explains how this and other one-word sentences illustrate some lexical ambiguities that can turn ordinary words and...
Crash Course
Netflix & Chill: Crash Course Philosophy
Last week we talked about language and meaning. Today, Hank explores some of the things that complicate meaning and how we get around that. We’ll explain conversational implicature, the cooperative principle, and the four main maxims of...
TED Talks
Steven Petrow: 3 ways to practice civility
What does it mean to be civil? Journalist Steven Petrow looks for answers in the original meaning of the word, showing why civility shouldn't be dismissed as conversation-stifling political correctness or censorship. Learn three ways we...
Bozeman Science
Cladograms
Paul Andersen shows you how to construct a cladogram from a group of organisms using shared characteristics. He also discusses the process of parsimony in cladogram construction. He then explains how modern cladograms are constructed and...
TED Talks
TED: How many lives can you live? | Sarah Kay
Spoken-word poet Sarah Kay was stunned to find she couldn't be a princess, ballerina and astronaut all in one lifetime. In this talk, she delivers two powerful poems that show us how we can live other lives. Sarah is also the host of...
Bozeman Science
The Rate Constant
In this video Paul Andersen describes the characteristics of the rate constant in chemical reactions. The rate constant is highly variable in reactions and must be determined experimentally. The rate constant is dependent on both...
TED Talks
TED: Try something new for 30 days | Matt Cutts
Is there something you've always meant to do, wanted to do, but just ... haven't? Matt Cutts suggests: Try it for 30 days. This short, lighthearted talk offers a neat way to think about setting and achieving goals.
SciShow Kids
Birds that Talk!
Birds can communicate with each other in lots of ways, but some types of birds can learn human words! But just because they learn human words, does that mean that they can understand them?
Bozeman Science
AP Biology Lab 1: Diffusion and Osmosis
Paul Andersen starts with a brief description of diffusion and osmosis. He then describes the diffusion demonstration and how molecules move over time. He then explains the concepts behind the osmosis lab and how potatoes are affected by...
Bozeman Science
Energy Changing Processes
In this video Paul Andersen explains how energy can enter and leave a system. The amount of energy a substance can receive through heating or lose through cooling is measured using the specific heat capacity. Phase changing energy from...
Bozeman Science
Homeostatic Disruptions
Paul Andersen explains how disruptions in homeostasis can affect biological systems at all levels. He uses the example of dehydration in animals to explain how disruptions at the cellular level can affect an organism. He also uses the...
Bozeman Science
Elementary Reactions
In this video Paul Andersen explains that elementary reactions are steps within a larger reaction mechanism. Colliding molecules require sufficient energy and proper orientation to break bonds and form new bonds. A unimolecular reaction...
Bozeman Science
Spontaneous Processes
In this video Paul Andersen discriminates between spontaneous (or thermodynamically favored) processes and those that are not spontaneous. A spontaneous process requires no external energy source. If the enthalpy change in a reaction is...
Bozeman Science
Plants
Paul surveys the Kingdom Plantae. He begins with a brief description of the phylogeny of land plants. He then describes the defining characteristics of plants, including cell walls, embryophytes, alternation of generation and...
Bozeman Science
Activation Energy
In this video Paul Andersen explains how the activation energy is a measure of the amount of energy required for a chemical reaction to occur. Due to the collision theory the activation energy requires proper energy and orientation of...
Bozeman Science
Elementary Charge
In this video Paul Andersen explains how electric charge is quantized and how the smallest unit of charge is 1.6x10^-19 C, or the elementary charge. Robert Millikan discovered the elementary charge using the oil drop experiment....
Bozeman Science
Osmosis Demo
Mr. Andersen gives a brief description of osmosis. He explains how water moves from a hypotonic to a hypertonic solution across a semipermeable membrane. The video ends with a time-lapse demon in class.
TED-Ed
TED-Ed: Can you solve the locker riddle? - Lisa Winer
Your rich, eccentric uncle just passed away, and you and your 99 nasty relatives have been invited to the reading of his will. He wanted to leave all of his money to you, but he knew that if he did, your relatives would pester you...
Crash Course
YouTube Couldn't Exist Without Communications & Signal Processing: Crash Course Engineering #42
Engineering helped make this video possible. This week we’ll look at how it’s possible for you to watch this video with the fundamentals of signal processing. We’ll explore things from Morse Code, to problems like bandwidth capacity and...
TED-Ed
TED-Ed: What color is Tuesday? Exploring synesthesia - Richard E. Cytowic
How does one experience synesthesia -- the neurological trait that combines two or more senses? Synesthetes may taste the number 9 or attach a color to each day of the week. Richard E. Cytowic explains the fascinating world of entangled...
SciShow
Why Does a Word Sometimes Lose All Meaning?
You may have experienced this before: When you repeat the same word over and over and over and over and over and over and over and over and over and over and over and over, the words suddenly sound foreign and lose all meaning, but why?
Crash Course
Social Influence: Crash Course Psychology
Why do people sometimes do bad things just because someone else told them to? And what does the term Groupthink mean? In today's episode of Crash Course Psychology, Hank talks about the ideas of Social Influence and how it can affect our...