New Additive Manufacturing Contenders: HIP and Centrifugal Printing
https://hackaday.com/2024/07/20/new-additive-manufacturing-contenders-hip-and-centrifugal-printing/

Additive Manufacturing (AM) is a field of ever-growing importance, with many startups and existing companies seeking to either improve on existing AM technologies or market new approaches. At the RAPID …read more (https://hackaday.com/2024/07/20/new-additive-manufacturing-contenders-hip-and-centrifugal-printing/)

Working Through The Art of Electronics Exercises
https://hackaday.com/2024/07/20/working-through-the-art-of-electronics-exercises/

[The Engineering Experience] has an ambitious series of videos. He’s working through circuit examples from the awesome book “The Art of Electronics.” In the latest installment, he’s looking at a …read more (https://hackaday.com/2024/07/20/working-through-the-art-of-electronics-exercises/)

Using Femtosecond Laser Pulses to Induce Metastable Hidden States in Magnetite
https://hackaday.com/2024/07/20/using-femtosecond-laser-pulses-to-induce-metastable-hidden-states-in-magnetite/

Sketch of the UED setup at EPFL, 1) Electron gun, 2) High-Voltage connector, 3) Photo-cathode, 4) Anode, 5) Collimating solenoid, 6) Steering plates, 7) Focusing solenoid, 8) RF cavity, 9) Sample holder, 10) Cryostat, 11) Electron detector, 12) Turbo pump, 13) Ion gauge. Credit: Proceedings of the National Academy of Sciences (2024). DOI: 10.1073/pnas.2316438121
" data-medium-file="https://hackaday.com/wp-content/uploads/2024/07/magnetite_hidden_states_controlling-electronic.jpg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2024/07/magnetite_hidden_states_controlling-electronic.jpg?w=800" tabindex="0" role="button">Hidden states are a fascinating aspect of matter, as these can not normally be reached via natural processes (i.e. non-ergodic), but we can establish them using laser photoexcitation. Although these …read more (https://hackaday.com/2024/07/20/using-femtosecond-laser-pulses-to-induce-metastable-hidden-states-in-magnetite/)

All About PNP Transistors
https://hackaday.com/2024/07/21/all-about-pnp-transistors/

In the early days, PNP bipolar transistors were common, but the bulk of circuits you see today use NPN transistors. As [Aaron Danner] points out, many people think PNP transistors …read more (https://hackaday.com/2024/07/21/all-about-pnp-transistors/)

Welding Wood Is As Simple as Rubbing Two Sticks Together
https://hackaday.com/2024/07/21/welding-wood-is-as-simple-as-rubbing-two-sticks-together/

Can you weld wood? It seems like a silly question — if you throw a couple of pieces of oak on the welding table and whip out the TIG torch, …read more (https://hackaday.com/2024/07/21/welding-wood-is-as-simple-as-rubbing-two-sticks-together/)

Ask Hackaday: Should We Teach BASIC?
https://hackaday.com/2024/07/21/ask-hackaday-should-we-teach-basic/

Suppose you decide you want to become a novelist. You enroll in the Hackaday Famous Novelists School where your instructor announces that since all truly great novels are written in …read more (https://hackaday.com/2024/07/21/ask-hackaday-should-we-teach-basic/)

Powering Biology with Batteries
https://hackaday.com/2024/07/21/powering-biology-with-batteries/