berkeman's latest activity

(Thread discussion level changed from Graduate to Undergraduate based on the OP's background.)

If you are making 2-D drawings, why do you need 3-axis motor movement? If you need to just lift the pen in the 3rd dimension, you can...

Aero engineers in flight control design or stability and control use it heavily.

This bodes well for life surviving in space. Kinda crazy how bacteria and viruses evolved to be more resilient in low gravity conditions.

Thank you so much Greg! Again, please don't worry. It could have been some occasional glitch, not worth losing time over it. Let's see...

Frost on a windowpane: Nikon D810 + 55mm MicroNikkor + M2 extender w/ focus set at 1:1 reproduction ratio, 1/60s f/8 +2.7 EV, auto...

Photo of me after a four mile run at minus 32 deg F this morning. Frosty on the outside, warm on the inside. The ice buildup on my...

I sent you a DM with tips for posting math here at PF using our LaTeX engine. :smile:

I'm a high school student and my teacher signed me up for some kind of olympiad and now I'm learning stuff, but at a pretty slow pace. I...

OK, I guess I'm only buying name brand batteries now. Lumafield makes CT scanners for industrial engineering and production testing...

Yikes!

When running DC motors from banks of batteries, the battery banks, and/or multiple motors, can be connected in series, or in parallel...

Batteries bad The article linked above says batteries are problematic in space. I propose a flywheel, which is suited to the Lunar...

Thanks. Fixed it.

They have not visited PF for the last 10 years...