Friday, December 03, 2021

Tiny Camera

"Researchers shrink camera to the size of a salt grain". (Via G.F.)

While a traditional camera uses a series of curved glass or plastic lenses to bend light rays into focus, the new optical system relies on a technology called a metasurface, which can be produced much like a computer chip. Just half a millimeter wide, the metasurface is studded with 1.6 million cylindrical posts, each roughly the size of the human immunodeficiency virus (HIV).

Each post has a unique geometry, and functions like an optical antenna. Varying the design of each post is necessary to correctly shape the entire optical wavefront. With the help of machine learning-based algorithms, the posts’ interactions with light combine to produce the highest-quality images and widest field of view for a full-color metasurface camera developed to date.


 

Reproducing Robots Update

CNN: "World's first living robots can now reproduce, scientists say"

Tuesday, November 30, 2021

Santa Shortage

Tight labor market for heavy-set older men, results in a "Santa Shortage".

Year Of Meals For $150

"Meet the Guy Who Spends Just $150 a Year to Eat All His Meals at Six Flags". (Via Gus Van Horn.)

Wednesday, November 24, 2021

Light Posting

Admin note: Posting will be light or non-existent the rest of the week because of the US Thanksgiving holiday.

Bionic Hand Update

"Bionic Hand Gives Amputees Sense of Touch". (Via H.R.)

Tuesday, November 23, 2021

Plants Vs. Prey

"Time Lapse of Carnivorous Plants and Their Prey Preparing for Battle".

Also: "[N]ever fear, a tender disclaimer in the video’s description: 'All insects captured by the plants have been released.'"


New Mineral

"New Mineral Discovered in Deep-Earth Diamond":

A diamond that formed deep in the earth’s mantle contains a mineral never seen before in nature. The discovery is a rare glimpse into the deep mantle and may help reveal new information about the structure of the planet at depths of more than 660 kilometers...

The mineral, calcium silicate perovskite, only forms under the incredibly high pressures that occur deep in the earth...

 

Monday, November 22, 2021

Friday, November 19, 2021