Rod Nave by Ciro Santilli 37 Created 2024-06-28 Updated 2025-07-16
Cell type by species by Ciro Santilli 37 Created 2024-06-28 Updated 2025-07-16
Human-readable format by Ciro Santilli 37 Created 2024-06-28 Updated 2025-07-16
Noble gas by Ciro Santilli 37 Created 2024-06-28 Updated 2025-07-16
Ball-and-stick model by Ciro Santilli 37 Created 2024-06-26 Updated 2025-07-16
Figure 1.
Ball-and-stick model of proline
. Source.
Multi-mode optical fiber by Ciro Santilli 37 Created 2024-06-26 Updated 2025-07-16
Video 1.
Multi-mode fiber demonstration by Shaoul Ezekiel
. Source. 2008, MIT.
Single-mode optical fiber by Ciro Santilli 37 Created 2024-06-26 Updated 2025-07-16
Quandela by Ciro Santilli 37 Created 2024-06-26 Updated 2025-07-16
One interesting aspect of this company is that they are trying to sell not only full quantum computers, but also components that could be used by competitors, such as
Spacial coherence by Ciro Santilli 37 Created 2024-06-26 Updated 2025-07-16
Spectral coherence by Ciro Santilli 37 Created 2024-06-26 Updated 2025-07-16
Spectophotometry by Ciro Santilli 37 Created 2024-06-26 Updated 2025-07-16
Video 1.
Donated Eskalab Spectrophotometer by CuriousMarc
. Source.
Single-mode and multi-mode optical fiber by Ciro Santilli 37 Created 2024-06-26 Updated 2025-07-16
From a practical point of view single-mode:
As such, typical applications are:
From a mathematical point of view:
Saturation magnetisation by Ciro Santilli 37 Created 2024-06-26 Updated 2025-07-16
Ethernet over fiber by Ciro Santilli 37 Created 2024-06-26 Updated 2025-07-16
Magnetic hysteresis by Ciro Santilli 37 Created 2024-06-26 Updated 2025-07-16
To understand the graph, first learn/remember the difference between the magnetic B and H field.
The interest of the magnetic hysteresis graph is that it serves as an important characterization of a :
This curve will also tell you how many turns of the coil will be needed to reach the required field.
Video 1.
Measurement of B-H characteristic
. Source.
1989. 1989 and they were making such awesome materials. It is hard to understand why university still exists given this.
Shows how you can obtain the magnetic hysteresis curve with an AC source plus an oscilloscope in XY mode. youtu.be/pXukVix5Pcw?t=193 clearly shows the measurement circuit.
Video 2.
Magnetic hysteresis experiment by UNSW Physics.
Source.
2020, thanks COVID-19. Like other UNSW Physics YouTube channel videos, the experimental setup could be made clearer with diagrams.
But this video does have one merit: it shows that the hysteresis plot can be obtained directly with the oscilloscope XY mode by using an AC source. The Y axis is just a measure of the total magnetic field induced by the primary coil + the magnetization of the material itself.

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