👉 Learn all about graphing natural logarithmic functions. A logarithmic function is a function with logarithms in them. A natural logarithmic function (ln function) is a logarithmic function to the base of e. The graph of the parent...

It explains the purification of metals based on the difference properties of metals and impurities. It describes the various methods of refining.

This fascinating program takes students on a journey through time as the history of life on Earth is explored. From the dawn of life to the existence of advanced vertebrate animals, each of the major periods of life are investigated....

NASA | Alex Young Comet ISON Interview

👉 Learn how to identify the vertex of a parabola by completing the square. A parabola is the shape of the graph of a quadratic equation. A quadratic equation can be written in the standard form (i.e. in the form y = ax^2 + bx + c) or it...

Practice REAL problems from actual past IIT/JEE exams with Professor Dave!

Learn the basics about Reactions of copper. What does copper react to? How is the chemical reaction of copper noticed? Find out more in this video!

Imagine you are reading something for a school assignment, a novel, or a technical summary of the country’s current economic situation. But you suddenly realize that you are only reading the words without absorbing anything. In other...

Launching in late 2021, Lucy will be the first space mission to explore the Trojan asteroids. These are a population of small bodies that are left over from the formation of the solar system. They...

Factor V Leiden | Causes, Pathophysiology, Symptoms, Diagnosis, Treatment Factor V Leiden (also known as Activated Protein C Resistance) is a relatively common inherited hematologic condition involving increased risk of thromboses. Thus,...

Scientists may have finally solved the mystery of the ‘tiger stripes’ on Saturn’s moon Enceladus, according to a study published in Nature Astronomy. <br/>

Clouds manifest moisture condensed in the air. In this program they are appreciated and pondered. Clouds give clues to wind direction, humidity levels, weather patterns, and they just make pretty sights. We look at the basic type of...

Practice REAL problems from actual past IIT/JEE exams with Professor Dave!

Kinetics: The Pre-Equilibrium Approximation

In March of 2015, an unprecedented NASA mission will launch to study a process so mysterious that no one has ever directly measured it in action. To create the first-ever 3-dimensional maps of this process, a process called...

We know that the free energy change associated with a process will tell us whether it is spontaneous or not. And we also know that this depends on the change in enthalpy and the change in entropy for that process, as well as the...

This fascinating program takes students on a journey through time as the history of life on Earth is explored. From the dawn of life to the existence of advanced vertebrate animals, each of the major periods of life are investigated....

NASA Scientist Dr. Holly Gilbert discusses the upcoming launch and overview of the MMS Mission.<b<b<br/>r/>r/>

Clouds manifest moisture condensed in the air. In this program they are appreciated and pondered. Clouds give clues to wind direction, humidity levels, weather patterns, and they just make pretty sights. We look at the basic type of...

Everyone talks about Leonardo da Vinci as the paradigm of the Renaissance Man. His painting The Virgin on the Rocks is perhaps the best example of his many talents on display.

The concept of the cosmic calendar was popularized by famous astronomer Carl Sagan to help people understand just how far apart on a time scale events in the Universe are. Basically, he arranged the 13.8 billion years of the Universe’s...

Next in the series of olefination reactions is the Peterson olefination. This uses alpha-halo silanes and is quite fascinating, with a number of unique advantages. Namely, the stereochemistry of the alkene product can be controlled by...

Hemostasis is the process by which we stop bleeding. In this video, we’re going to get into the three mechanisms involved in the process of hemostasis - vascular spasm, platelet plug formation, and coagulation.

The circulatory system, like every other system in the body, is very important. And when there are problems with your cardiovascular system, your doctor may prescribe various medications to help. Let's take a look at five kinds of...