Concertina wire Updated 2025-07-16
Electronic warfare Updated 2025-07-16
Microscope Project (YouTube channel) Updated 2025-07-16
As of 2022, this channel is still finding its feet. But it has promise.
Unfortunately it does not show sample preparation, and it does not use controlled cultures, so we are never sure which species are represented.
Sci-Inspi (YouTube channel) Updated 2025-07-16
Metric space vs normed vector space vs inner product space Updated 2025-07-16
TODO examples:
- metric space that is not a normed vector space
- norm vs metric: a norm gives size of one element. A metric is the distance between two elements. Given a norm in a space with subtraction, we can obtain a distance function: the metric induced by a norm.
Hierarchy of topological, metric, normed and inner product spaces
. Source. Complete metric space Updated 2025-07-16
In plain English: the space has no visible holes. If you start walking less and less on each step, you always converge to something that also falls in the space.
One notable example where completeness matters: Lebesgue integral of is complete but Riemann isn't.
Normed vector space Updated 2025-07-16
Norm (mathematics) Updated 2025-07-16
Vs metric:
- a norm is the size of one element. A metric is the distance between two elements.
- a norm is only defined on a vector space. A metric could be defined on something that is not a vector space. Most basic examples however are also vector spaces.
Pseudometric space Updated 2025-07-16
Metric space but where the distance between two distinct points can be zero.
Notable example: Minkowski space.
MediaWiki markup Updated 2025-07-16
BBC Updated 2025-07-16
Vice Media Updated 2025-07-16
Rolls-Royce Updated 2025-07-16
Atwood machine Updated 2025-07-16
Elastic collision Updated 2025-07-16
Harmonic oscillator Updated 2025-07-16
Pendulum Updated 2025-07-16
Two-body problem Updated 2025-07-16
youtu.be/Ca7c5B7Js18?t=803 compares Lagrangian mechanics equation vs the direct x/y coordinate equation.
Continuous mechanics problem Updated 2025-07-16
Maxwell-Boltzmann distribution Updated 2025-07-16
Maxwell-Boltzmann distribution for three different temperatures
. There are unlisted articles, also show them or only show them.

