Keegan D. Anderson, Ph.D.

I think and I know things.

[Shane Ross @RossDynamicsLab]

Effect of mass distribution in a trailer. Too much weight behind the wheels leads to unstable oscillations.

The physics, called nonholonomic mechanics, gives the motion of multi-body systems with constraints like rolling wheels:
https://t.co/CHOTtbKn0V

[Steve Trettel @stevejtrettel]

Gravitational Billiards and Chaos:

20,000 balls rolling on a landscape under uniform downward gravity, with initial positions differing randomly by up to 0.001.

A bit of (negative) curvature goes a long way to making the system depend sensitively on these initial conditions

[Nick Higham @nhigham]

What Is the Pseudoinverse of a Matrix? https://t.co/EHDVVI14mc

[Michael Negus @MichaelNegus]

We're hiring an Applied Mathematical Engineer at Vanellus to help us build our core CFD solver. If you or anyone you know has experience with numerical methods and is interested in working at an early-stage startup, let me know! https://t.co/MjM2DnBcDj #cfd #math #job #startup

[Keegan D. Anderson, Ph.D. @keegandoig]

Do you remember when you joined Twitter? I do! #MyTwitterAnniversary 🤔

[Keegan D. Anderson, Ph.D. @keegandoig]

Daar is niks soos die eerste somerreëntjie nie! 😃

[Leo C. Stein is @duetosymmetry on bsky/threads/🐘 @duetosymmetry]

I am once again asking people to read almost anything on numerical integration instead of using 1st order forward Euler

[Keegan D. Anderson, Ph.D. @keegandoig]

@Roomys Sê wat jy wil oor ou Willie, maar die man bly 'n goeie aanvalsmasjien!

[Keegan D. Anderson, Ph.D. @keegandoig]

Do you remember when you joined Twitter? I do! #MyTwitterAnniversary

[Keegan D. Anderson, Ph.D. @keegandoig]

@Roomys Nog steeds een van my gunsteling albums.

[Keegan D. Anderson, Ph.D. @keegandoig]

@Roomys Ek stem! SANZAAR moet terugkeer na 'n Super 12 toernooi.

[Keegan D. Anderson, Ph.D. @keegandoig]

@Sport24news Swop Aiden and Bavuma in the batting order. Bavuma can take shine off the red, Aiden can come in and attack the older ball.

[Daily Stoic @dailystoic]

5 Stoic lessons from Epictetus:

1. You become what you give your attention to
2. Don’t explain your philosophy. Embody it
3. To improve, you have to be OK with looking foolish
4. You can’t learn what you think you already know
5. Stop waiting to demand the best for yourself

[prof-g @prof_g]

billiards are a classic example of chaotic dynamical systems: choose a table shape, fire a ball, and find out what happens, using angle of incidence = angle of reflection
1/

[Mark Manson @Markmanson]

Validation is respect from others. Self-esteem is respect for yourself. Never sacrifice your self-esteem to gain validation. Validation is easily regained once lost. Self-respect is not.

[Journal of Fluid Mechanics @JFluidMech]

Simulations reveal that ducklings swimming in a single-file formation behind the parent can achieve a wave-riding benefit whereby the wave drag turns positive. Gives a new meaning to "get your ducks in a row" 🦆@JFluidMech #dynamic #equilibrium #swimming https://t.co/HUmZXhhCcV

[Keegan D. Anderson, Ph.D. @keegandoig]

@Theunis_VR @lancefron A misunderstanding of inflation by the OP?

[Daily Stoic @dailystoic]

"When someone is properly grounded in life, they shouldn't have to look outside themselves for approval." Epictetus

[Keegan D. Anderson, Ph.D. @keegandoig]

This looks very cool!

[Matt Henderson @matthen2]

new video on @numberphile discussing 'The Lightning Algorithm'
https://t.co/auJFuCjo6f