History Hit
Africa And War: Remembering African Soldiers
The first art piece is a musical that remembers the African soldiers aboard the SS Mendi. The second piece is an art installation that focuses on the very complicated role African soldiers played in the war. Africa And War, Part 1
Physics Girl
Experiments with $100,000+ Speakers
Join Physics Girl and PBS Digital Studios' new show SoundField as they experiment with giant $100,000 speakers and aim them at your body parts looking for resonance, at oobleck, at googly eyes, and at candles to explore the physics of...
Curated Video
Structure and Acoustics of the Trumpet
A trumpet is a musical instrument that amplifies the buzzing sound created by a musician blowing air through their lips. By manipulating the tightness or looseness of their lips, the musician can modify the pitch of the sound. The...
Professor Dave Explains
IIT/JEE Chemistry Practice #27: Resonance Energy
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Catalyst University
Pi-backbonding with Strong-Field Ligands
Pi-backbonding with Strong-Field Ligands
Next Animation Studio
NASA finds Neptune’s moons engaged in dance-like movement
Thalassa and Naiad appear to be locked in an intricate ‘dance of avoidance’ that keep their respective orbits stable, according to NASA.
Professor Dave Explains
Practice Problem: Site of Protonation on a Weak Base
For this one we will need to understand the basics about Bronsted-Lowry acid-base reactions, and we also should be able to gauge the stability of various potential conjugate bases.
Professor Dave Explains
Practice Problem: Analyzing Acid-Base Equilibria
Acids! Bases! Conjugate acids! Conjugate bases! We definitely have to be able to label such things, and we should also know how to state which direction in an acid-base equilibrium is preferred. To do this we should know how to tell...
Professor Dave Explains
Practice Problem: Crossed Aldol Products
Enolate chemistry is tricky business! You might get more products than you think. Give this one a shot.
Nature League
How Do Animals Make Sounds? - Field Trip
In this Nature League Field Trip, Brit sits down with Dr. Laurie Slovarp to explore the ways that humans and non-human animals make sounds. A special thanks to Dr. Slovarp for collaborating on this Nature League Field Trip.
Professor Dave Explains
Practice Problem: Assigning Molecular Structure From an NMR Spectrum
For this one we need to be able to interpret NMR data in order to arrive at the correct molecular structure based on an empirical formula. It's not as hard as it sounds!
Food Farmer Earth
A Viticulturist In his Vineyard During Harvest
Kevin Chambers of Resonance Vineyards in Carleton, Oregon, is on the 32nd harvest for this property, and he's using everything in his 3 decades of growing grapes to create a broader theory of how an effective farm should operate—a theory...
Catalyst University
Resonance Fluorescence: A Special Case of Fluorescence
Resonance Fluorescence: A Special Case of Fluorescence
Curated Video
The Mechanics of a Piano
The piano is unique among instruments in that it's both a stringed instrument and a percussion instrument. Learn about the parts of a piano and how the strings and hammers work together to create a piano's rich sound.
Physics Girl
Singing this Note is IMPOSSIBLE!
Try to sing the impossible note! Singers try to sing into a pipe, and find certain notes are impossible to sing, even for professionals. WHY?! More facts: Most objects have a number of different resonant frequencies. The first resonance...
msvgo
Preparation of Alcohols
It explains various methods for preparation of alcohols and phenols and the chemical properties and reactions of alcohols and phenols.
Catalyst University
Abstract Intuition for Resonance and Delocalization
Abstract Intuition for Resonance and Delocalization
Physics Girl
Singing plates - Standing Waves on Chladni plates
Use physics to create cool patterns on a vibrating plate. How is this like a guitar string or a singing wine glass?
Professor Dave Explains
Aromaticity and Huckel's Rule
What is it for a molecule to be aromatic? Where was this term derived and what properties does it bestow upon a molecule?
Flipping Physics
Demonstrating Sympathetic Vibrations - A Video Project by Bobby
Sympathetic vibrations are demonstrated using pendulums of various lengths and a guitar.
Professor Dave Explains
Resonance Structures/Assigning Formal Charge
Looking at resonance structures for organic molecules and learning how to determine formal charge.
Science Buddies
Can You Kazoo?
Do you remember your last parade, party, or fair? You might have been surrounded by sounds of all kinds: fireworks, music, and, maybe even the famous (or infamous) sound of kazoos. A kazoo is a very simple musical instrument, made up of...