Making holograms with a pen plotter

dejobaan 3 hours ago | parent | next [-]

This is "old Internet" style fun territory (along the same lines as the Tom7 fun, if not quite as deep). I felt that the olive oil + fingerprint + phone screen was a really nice way to illustrate the core concept. Especially clever because it used something common and annoying to help describe how the plotter does its thing.

	▲	TacticalCoder 3 hours ago \| parent [-]
		There are very few TFAs I upvotes before opening TFA. But with such a title, this is one of them...

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nomel 3 hours ago | parent | prev | next [-]

Related, "abrasion holography", with great good success for being hand drawn: http://amasci.com/amateur/holo1.html (1995)

Maybe could swap out the pen for a needle?

	▲	evilduck 2 hours ago \| parent \| next [-]
		Something tells me you didn't open the posted link.
	▲	bradrn 2 hours ago \| parent \| prev [-]
		In fact, I believe that the article is describing a reinvention of this technique! Just with a plotter on oil rather than a compass on plastic.

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asalahli 2 hours ago | parent | prev [-]

Steve Mould has a great video on youtube explaining how they work https://www.youtube.com/watch?v=sv-38lwV6vc