Physics Girl
Why is the universe flat?
Cosmic inflation is a theory that was proposed in the 1980s by cosmologist Alan Guth to answer some of the most fundamental questions of the origins of our universe. It also solved the Horizon Problem and the Flatness Problem.
Healthcare Triage
Election Results Impact the ACA, Medicaid Expansion, and Marijuana
Yesterday's election results have a lot of impact on health care in the United States. The new Democratic House of Representatives and the ACA, expansion of Medicaid in red states, and medical and recreational marijuana are all affected...
Astrum
Better than the James Webb Space Telescope? The Upcoming Extremely Large Telescope
Looking forward to the James Webb Space Telescope? Just wait until ESO's Extremely Large Telescope (ELT) is completed.
Curated Video
New Theories About the Future of the Universe: The Big Freeze, the Big Rip, and the Big Crunch
The video explores various theories proposed by scientists about the future of the universe. It explains the Big Bang theory, which suggests that the universe began from a very small and dense region and has been expanding ever since. It...
Hip Hughes History
The Warren Court Explained: US History Review
A short broad theme based lecture on the Warren Court as it relates to judicial review. Aimed at the United States American History Test given at the end of junior year. Even more specifically geared for the New York Regents Examination...
Healthcare Triage
Health Care Reform, Medicaid Expansion, and Hospital Finances
This election season has seen relatively little campaigning on health care reform. Short of the occasional cry to "repeal Obamacare" or the offhand complaint about how much health care costs, there's been relatively little focus on how...
Physics Girl
We can see things moving faster than light
How is it possible for galaxies and objects in space to move away from us faster than the speed of light? Will we ever see those objects?
Curated Video
The Big Bang Theory vs. Steady State Theory: Explaining the Evolution and Expansion of the Universe
The video discusses two theories that try to explain the expansion and evolution of the universe - the steady state theory and the Big Bang theory. The video covers the concept of redshift of light exhibited by galaxies moving away from...
Professor Dave Explains
Franklin Pierce: The Compromise Candidate (1853 - 1857)
Franklin Pierce only served one term, but the borders of America changed a fair amount during his time in office. Let's see what events led to these changes and what happened to Pierce!
Curated Video
How Does Temperature Regulation In An Electric Iron Work?
The working of an electric iron is very simple – it draws electricity from the mains and heats a coil inside. This heat is then transferred to the bottom plate, which is pressed against the clothing to remove wrinkles. It is the...
Curated Video
Dueling Economies That Fueled the Civil War
Which economy was best for the country's future? The industrial economy of the North? Or the plantation system of the South? The stage was set for a financial fracas that would lead to the deadliest war in US history.
Healthcare Triage
An Update on the Affordable Care Act - Oct. 23, 2015
We missed a birthday for Healthcare Triage! On October 1, we turned two years old.
Curated Video
Proving the Algebraic Squares Proof Using an Area Model
In this video, the teacher explains why (A+B)^2 is not equal to A^2 + B^2 and demonstrates how to prove the correct expansion using an area model. By visually representing the square of a binomial, the teacher shows that it consists of...
Astrum
Why is space black?
Olber's Paradox. With so many stars in the universe, why is space black and not white with light?
Curated Video
Understanding Inflation: Types and Consequences
This video explains the concept and types of inflation. The video then discusses two main classifications of inflation, namely demand pull inflation and cost push inflation. It provides examples of what causes each type of inflation and...
Curated Video
Forms of Business Growth: Organic and External Growth Explained
This video discusses the two main forms of growth for a business, organic growth and external growth. The narrator explains that organic growth happens when a business grows on its own terms, such as increasing production or opening more...
Curated Video
Dividing Exponential Expressions
In this video lesson, students learn how to divide exponential expressions by observing and generalizing a pattern. The teacher explains the concept of exponents and reviews the rule that states any number divided by itself is one....
Physics Girl
Is energy always conserved?
When light passes through the universe and is redshifted by the expansion of space itself, how is energy conserved? The stretched light has a longer wavelength and therefore a lower energy. Is energy conserved? If so, where does it go?
Hip Hughes History
The Election of 1844 Explained
A summary of the Presidential Election of 1844 between James K. Polk and Henry Clay.
Healthcare Triage
Republicans' Many Plans to Replace Obamacare
What policy changes would be minimally necessary for Republicans to claim that they've succeeded in "replacing" Obamacare? Health wonk and Incidental Economist Editor Adrianna McIntyre asked what would be seen as sufficient to rebrand...
The Wall Street Journal
The New Global Art Market
Edward Dolman, chief executive of auction house Phillips, and Gagosian founder and owner, Larry Gagosian, speak with WSJ art market reporter Kelly Crow about how art will expand around the world.
Curated Video
Grainer's Model of Growth: Understanding the Phases and Challenges of Business Expansion
This is a lecture video discussing Grainer's model of growth, a key growth theory that tries to explain the different phases that a business will experience when implementing a strategy focused on expansion. The video uses the analogy of...
Curated Video
Shareholder vs Stakeholder Concepts: Understanding Business Ethics
This video explores the differences between the shareholder and stakeholder concepts in the business world. It explains that the shareholder concept views businesses as solely existing to maximize profits for the owners (shareholders),...
Astrum
How do we know the universe is 13.8 billion years old?
How can scientists possibly know the age of the universe? Well, through a variety of factors, including redshift, the CMBR and more.