Curated Video
The Art and Benefits of Meditation
Meditation is a practice that focuses concentration and brings awareness to the present moment. Meditation has been practiced for centuries and is known to provide stress relief, relaxation, and even therapeutic benefits for the mind and...
Curated Video
The Evolution of Earth's Atmosphere
The video discusses how the Earth's atmosphere has evolved over the past 4.6 billion years, with a focus on the composition of gases present over different periods of time. It highlights the role of volcanoes, oceans, plants, and fossil...
Professor Dave Explains
Practice Problem: Calculations Involving pH and Ka
We know a bit about acids and bases, including the definitions of pH and pKa, as they relate to an acid-base equilibrium. If we have a weak acid and its concentration, as well as the pH of the solution, can we calculate the Ka for the...
Practical Ninjas
Single Beam Photometer | Absorption Spectroscopy | AI 04
The first and a very basic instrument called single beam photometer or colorimeter is explained in the following animated video. The photometer is used to determine the concentration of the unknown sample using the principle of...
Curated Video
Flame Emission Spectroscopy: An Instrumental Method for Identifying Metal Ions
The video discusses instrumental methods in chemistry, specifically flame emission spectroscopy, as a superior alternative to traditional methods such as flame tests and sodium hydroxide tests. It explains how the technique works, where...
NASA
Hubble Makes Unexpected Dark Matter Discovery
Astronomers seem to have revealed a puzzling detail in the way dark matter behaves. They found small, dense concentrations of dark matter that bend and magnify light much more strongly than expected. Video credit: NASA's Goddard Space...
Curated Video
Six Points of Pilates
Learn the six concepts that form the core of pilates practice. Pilates part 3/4
Curated Video
Analyzing and Purifying Water: Required Practical Activities in Chemistry
The video discusses the required practical activities for analyzing and purifying water in a chemistry specification. The focus is on the steps involved in determining the mass of salts dissolved in seawater, measuring the pH of water...
Catalyst University
Buffers: ICE Problem With Henderson-Hasselbalch Equation
Buffers: ICE Problem With Henderson-Hasselbalch Equation
The March of Time
1945: OCCUPIED WAKE ISLAND: VS United States Major Colonel Walter Baylor (unconfirmed) arriving on Wake Island, various Japanese soldiers standing at attention, U.S. soldiers raising American flag, Japanese soldiers saluting. WWII surrender
MOT 1945: OCCUPIED WAKE ISLAND: VS United States Major Colonel Walter Baylor (unconfirmed) arriving on Wake Island, various Japanese soldiers standing at attention, U.S. soldiers raising American flag, Japanese soldiers saluting. WWII...
The March of Time
MOT: 1938: Nazi surveillance and persecution of the German population
Woman meets with Nazi officials as informant, men sitting in jail, women answering questions, ID card closeup, concentration camp.
NASA
Water Released from Moon During Meteor Showers
Scientists have discovered that water is being released from the Moon during meteor showers. When a speck of comet debris strikes the Moon it vaporizes on impact, creating a shock wave in the lunar soil. For a sufficiently large...
Curated Video
Titration Calculations: Understanding Concentration and Molar Concentration
The video is a lecture on titration calculations. The video is divided into two parts, with the first part focusing on concentration and molar concentration. The professor explains the concept of concentration and how it is calculated...
Catalyst University
A&P I Lab | Exercise 3a: Diffusion, Osmosis, & Diffusion Rate
A&P I Lab | Exercise 3a: Diffusion, Osmosis, & Diffusion Rate
The March of Time
MOT 1951: IRAN
WS Iranian soldiers troops standing at attention behind artillery lined up for for inspection American US officer inspecting weapon talking w/ Iranian soldier (no SOT) / MOT 1951: IRAN AIR FIELD: Military truck passing FG airfield...
NASA
MAVEN Explores Mars to Understand Radio Interference at Earth
NASA’s MAVEN (Mars Atmosphere and Volatile Evolution) spacecraft has discovered “layers” and “rifts” in the electrically charged part of the upper atmosphere (the ionosphere) of Mars. The phenomenon is very common at Earth and causes...
Professor Dave Explains
IIT/JEE Chemistry Practice #34: Equilibrium Constants
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Professor Dave Explains
IIT/JEE Chemistry Practice #9: Molarity/Molality
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
The March of Time
MOT 1941: BRITAIN TASK FORCE AT SEA
NIGHT: (POV Deck) Britain Navy ship at sea VS Silhouette of sailor looking through binoculars VS Norwegian soldiers & sailors on deck, smoking, at attention LA MS Lookout men, binoculars.
Curated Video
Factors Affecting the Rate of Reaction
The video discusses the factors that affect the rate of chemical reactions. The first factor is the number of collisions with enough energy to react. Other factors include changing the pressure, concentration, surface area, and...
Curated Video
Calculating Concentration Ratios in Oligopoly Markets
This video is about calculating concentration ratios in a market, especially in an oligopoly. The video explains what concentration ratios are, how they help understand the market structure, and how to calculate them for different...
Professor Dave Explains
IIT/JEE Chemistry Practice #11: Moles/Molarity
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Professor Dave Explains
Practice Problem: Free Energy and Nonstandard Conditions
We know that a lot of thermodynamic data is collected under standard conditions, but sometimes we will want to assess the free energy change associated with a process that is not occurring under standard conditions. Any other conditions...