Uva Virtual Lab: How Semiconductors and Transistors Work

Tiny transistors have a big job to do in all of our electronic devices ... so, how do they work? Discover the chemistry and physics behind semiconductive elements such as silicon through an intriguing video from Veritasium's playlist....

We have all seen Van de Graaff generators, but how does one work? It comes down to two fairly simple consequences of charge attraction and repulsion and a bit of treachery. Take a look at these video clips illustrating the Van de Graaff.

No chemistry lab? No problem! Scholars use a virtual lab to determine the solubility product of four different chemicals. They then use the results of their experiments to see if higher solubility product values equal greater solubility.

Textbook problems with a twist! Young chemists analyze an ionic reaction to identify the limiting reagent. They then make calculations to determine the concentration of unknown solutions. Finally, they put their work to the test and...

A metal's density could be considered its fingerprint! A virtual lab activity has learners calculate the density of a sample of metal to make its identification. The simulation allows individuals to perform the measurements as if they...

Why do the bases in DNA pair up the way they do? Unravel the mystery of the double helix in a virtual lab. Young scientists follow in the footsteps of Watson and Crick to determine the free energy associated with DNA base pair binding....

Check out this online lab to recognize what an SPM is and how it functions.

Find out what an SEM does and how it does it with this online lab.

In this science simulation, students learn how to use a microscope as they investigate bacterial contamination in a sample of yogurt.

Take a look at a virtual lab which illustrates the way a current works with different capacitors.