Who you'll be learning with
Sid is a physicist, an author and a two-time founder. He spent twenty years building systems with international technology leaders, much of it as a senior technical trainer and unit manager trainer, and has taught Python, data science, web, Android and CAD to learners online. His R&D firm, SidLabs, was a UN/ITU AI for Good Impact Awards finalist with two projects.
Why Everything Has a NoteBook one. Stiffness versus inertia, and why every object that can vibrate has a natural note.On Amazon
Why One Object Has Many NotesBook two. Boundary conditions and the ladder of modes: why a single object rings with many notes at once.On Amazon
Published research in acoustics and resonance
The stethoscope of the universe: the speed of sound, from a tapped rod to the cosmosPut your ear to a railway track and you hear the train twice: through the steel at about 5,000 metres a second, then through the air at 343. One number, set by stiffness and density, explains it, and the same number guides violin makers and told us the Earth's outer core is molten without anyone drilling. International Journal of Physics and Applications.
Why a bar's thickness does not change its pitchMost people expect a thicker bar to ring lower. For a bar tapped along its length it doesn't: thickness adds stiffness and mass in equal measure, so it cancels out. A teaching paper, "meant to be read with a rod in one hand." International Journal of Mechanics of Solids.
The speed that sets a material's voice: why steel rings and plastic thudsTwo numbers decide how a material sounds: its stiffness per kilogram, which sets the pitch, and its loss factor, which decides whether the note lingers or dies as heat. International Journal of Materials Science.
"In science a sentence is true only when its boundary conditions are carried along with it."From Sid's paper on bars and pitch. It's how he teaches too: what works, and exactly where it stops working.
Why it matters to you: you'll be taught by someone who still does the research, writes it up for non-specialists, and ships products, not by a presenter reading slides.
