Fresnel diffraction by Ciro Santilli 40 Updated 2025-07-16
Near field approximation to Kirchhoff's diffraction formula, i.e. when the plane of observation is near the object diffracting.
async (JavaScript) by Ciro Santilli 40 Updated 2025-07-16
async is all present in JavaScript for two reasons:
Like PCR, but does not require thermal cycling. Thus the "isothermal" in the name: iso means same, so "same temperature".
Not needing the thermo cycling means that the equipment needed is much smaller and cheaper it seems.
Video 1.
Loop Mediated Isothermal Amplification (LAMP) Tutorial by New England Biolabs (2015)
Source. Explains the basic LAMP concept well.
One single universal wavefunction, and every possible outcomes happens in some alternate universe. Does feel a bit sad and superfluous, but also does give some sense to perceived "wave function collapse".
Bridge amplification by Ciro Santilli 40 Updated 2025-07-16
This is one of the the key innovations of the Illumina (originally Solexa) sequencing.
This step is genius because sequencing is basically a signal-to-noise problem, as you are trying to observe individual tiny nucleotides mixed with billions of other tiny nucleotides.
With bridge amplification, we group some of the nucleotides together, and multiply the signal millions of times for that part of the DNA.

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