Molding Complex Optics in a Completely Fluid System
https://hackaday.com/2021/12/09/molding-complex-optics-in-a-completely-fluid-system/

Traditional lensmaking is a grind — literally. One starts with a piece of glass, rubs it against an abrasive surface to wear away the excess bits, and eventually gets it …read more (https://hackaday.com/2021/12/09/molding-complex-optics-in-a-completely-fluid-system/)

The Challenges Of Finding A Substitute For Human Blood
https://hackaday.com/2021/12/09/the-challenges-of-finding-a-substitute-for-human-blood/

Throughout history, the human body has been the subject of endless scrutiny and wonder. Many puzzled over the function of all these organs and fluids found inside. This included the …read more (https://hackaday.com/2021/12/09/the-challenges-of-finding-a-substitute-for-human-blood/)

Wearable Sensor for Detecting Substance Use Disorder
https://hackaday.com/2021/12/09/wearable-sensor-for-detecting-substance-use-disorder/

Image courtesy of https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7197459/
" data-medium-file="https://hackaday.com/wp-content/uploads/2020/04/Fig1-mod2-bigcropped.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2020/04/Fig1-mod2-bigcropped.png?w=800">Oftentimes, the feature set for our typical fitness-focused wearables feels a bit empty. Push notifications on your wrist? OK, fine. Counting your steps? Sure, why not. But how useful are …read more (https://hackaday.com/2021/12/09/wearable-sensor-for-detecting-substance-use-disorder/)

Keynote Video: Dr. Keith Thorne Explains the Extreme Engineering of the LIGO Hardware
https://hackaday.com/2021/12/09/keynote-video-dr-keith-thorne-explains-the-extreme-engineering-of-the-ligo-hardware/

The Laser Interferometer Gravitational-Wave Observatory (LIGO) is a huge installation measured in kilometers that is listening for wrinkles in space-time. Pulling this off is a true story of hardware and …read more (https://hackaday.com/2021/12/09/keynote-video-dr-keith-thorne-explains-the-extreme-engineering-of-the-ligo-hardware/)

Could India Be The Crucial Battleground For Open Access To Scientific Research?
https://hackaday.com/2021/12/09/could-india-be-the-crucial-battleground-for-open-access-to-scientific-research/

One of the hottest topics in the world of scientific publishing over the last couple of decades has been the growing pressure to release the fruits of public-funded scientific research …read more (https://hackaday.com/2021/12/09/could-india-be-the-crucial-battleground-for-open-access-to-scientific-research/)

The Ins and Outs of Casting Lenses from Epoxy
https://hackaday.com/2021/12/09/the-ins-and-outs-of-casting-lenses-from-epoxy/

If you need a lens for a project, chances are pretty good that you pick up a catalog or look up an optics vendor online and just order something. Practical, …read more (https://hackaday.com/2021/12/09/the-ins-and-outs-of-casting-lenses-from-epoxy/)

BEAM Bird Pendant Really Chirps
https://hackaday.com/2021/12/09/beam-bird-pendant-really-chirps/