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Extended Arm — STELARC

Stelarc discusses the extended arm in this interview with Adam Ford.
“The Extended Arm is an eleven-degree-of-freedom manipulator with wrist flexion, wrist rotation, thumb rotation, individual finger flexion, with each finger splitting open, so each finger can potentially be a gripper in itself. The artist’s fingers rest on a panel of switches enabling the selection of pre-programmed sequences of finger, thumb and wrist movements. The clicking fingers, the compressed air and solenoid generate the sounds when performing. The Extended Arm extends the artist’s right arm to primate proportions. ”

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Alien Impostors & Doppelgangers

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The idea that some mimic might steal your identity and replace you, or takeover your mind, is terrifying. But could we encounter aliens that were able to do this?

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Credits:
Alien Civilizations: Alien Impostors & Doppelgangers.
Science & Futurism with Isaac Arthur.
Episode 359a, September 11, 2022
Written, Produced & Narrated by Isaac Arthur.

Editors:
David McFarlane.

Graphics:

Taking A Deep Dive Into Dr. @Bart D. Ehrman Scholarship on Christianity & The Bible

In this interview we dive into Dr. @Bart D. Ehrman professional thoughts about various interesting ideas. This is a must watch interview.

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https://www.mythvisionpodcast.com/christmas.

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Liquid Crystal Waves

Liquid crystals are used extensively in flat panel displays, where the light or dark state of each pixel is determined by the orientations of the liquid crystal molecules. Researchers are always looking for new liquid crystal phenomena to exploit, and now a team shows in a series of videos that they can generate traveling waves associated with the rotation of liquid crystal molecules [1]. The experiments demonstrate 3D control over the molecules’ orientations using an applied electric field in only one direction, a level of control that could be useful in future devices.

Jang-Kun Song of Sungkyunkwan University, South Korea, and his colleagues placed a commercial liquid crystal used for displays into the 3.5-micrometer gap between a pair of horizontal glass plates. The team also placed polarizers above and below the plates and oriented the polarizer axes at right angles. This arrangement is opaque when the rod-shaped liquid crystal molecules are oriented vertically or parallel to one of the polarizer axes but transmits light when they are in any other orientation.

The team illuminated the plates from below and filmed the liquid crystal’s response to a voltage applied across the gap. They found that particular repeating voltage patterns—for example, a square wave oscillating between +6 V and −6 V for 10 milliseconds followed by 20 milliseconds with no applied voltage—resulted in light-dark waves moving across the liquid crystal. The researchers varied the parameters for the voltage signal and measured the effects on the wave speed and direction.

How small is the smallest thing

The smallest distance in the universe is the unimaginably small Planck length. In this video we will try to imagine it, and explain why it is so significant.
Picture credits.
Fox.
By Xeppo.
https://pixabay.com/photos/mammals-fox-wildlife-natural-wild-3218028/
Kitten.
By Dimhou.
https://pixabay.com/photos/cat-flower-kitten-stone-pet-2536662/
Duckling.
By Alexas_Fotos.
https://pixabay.com/photos/mallard-ducklings-duck-chicks-cute-3524213/
ant.
by Mylene2401
https://pixabay.com/photos/ant-rose-petals-insect-animal-5235935/
Sand.
By PDPics.
https://pixabay.com/photos/sand-granulate-granulate-material-167005/
Statue of liberty.
By Itou365
https://pixabay.com/photos/new-york-statue-of-liberty-115626/
Big ben.
By pdimaria.
https://pixabay.com/photos/westminster-big-ben-london-902972/