Recent content by cave_cat

I am trying to make sense of these articles http://info.kubotek3d.com/3D-Engineering-Software-Tools-Kubotek-Blog/?Tag=Direct%20CAD%20vs%20Parametric%20CAD and http://en.wikipedia.org/wiki/Explicit_modeling . To me this sounds like "if using parametric relations is too complex, let's stop using...

I am referring to "3 parents baby" discussed e.g. here http://www.economist.com/news/leaders/21565209-new-technique-help-cure-mitochondrial-diseases-should-be-permitted-law-powering . AFAIU they take the egg of mitochondria donor, remove its nucleus / DNA and transplant into it the mother's DNA...

roughly the same question has been asked here http://biology.stackexchange.com/questions/19204/how-is-information-sent-from-limbs-to-the-brain-exactly AFAICT people responding did not explain how the spine does addressing / routing / multiplexing of messages between the muscle and the...

if I can move specific muscle in my toe via brain command, does this mean that in spinal cord there is a specific fiber that extends from brain to that toe? And let's say if in a lab rat we cut that single CNS fiber, the muscle affected will stop working without any other consequences to the...

in wikipedia Immunotherapy article it talks about how they treat some cancers with "T-cell adoptive transfer" involving cloning patient's white blood cells, sometimes modifying / improving them and then injecting them back into the patient. It says that research started in the 80s and seems to...

jack action, thank you for the examples. I guess I still don't fully see the "constraint" aspect in them -- these look to me more like propagation of variable change in a functional program. But, for one thing, maybe that's just what they call it in the CAD space, i.e. "constraints" instead of...

I have seen the following said on a forum: This makes good sense to me. To me, as a programmer, this sounds like he is asking for a better API to look up the coordinate at runtime; perhaps that would force the engine to evaluate expressions in a particular order, but then that's what functional...

a UK company got $10M to build it, see here http://www.greentechmedia.com/articles/read/liquid-air-for-utility-scale-energy-storage/ . Can this be at least hypothetically feasible or is it more like pure quackery for stupid investors? ETA: to clarify, I don't doubt that it would "work" the same...

if I were to disassemble the cellphone and try to extract the "antenna" component, what would I get? Is it a long straight cable? Or a mesh? Can it actually be extracted out of the case or is it somehow embedded into "motherboard"?

most mice I have used are of the usb kind. Do they really have batteries inside as well? What's the point in having battery in usb device?

from online descriptions of laser mouse operating principle it's unclear to me that the mouse would need to be particularly big. Is the size of the mouse really based on ergonomics considerations and it could in practice be fit into much smaller case if we wanted to? Is the mouse actually mostly...

schip666!, thanks for the interesting info. LotusEffect, yeah, I understand that demanding more power out of an adapter that doesn't feel like giving it (like usb port in laptop) is not a good idea. But my question was predicated on having my own custom adapter that happens to use USB...

would commodity usb cables and ports survive an over-standard voltage and current?? suppose we want to make an adapter to power a gadget that require more voltage and power than what is allowed by the USB standard. But, suppose we try to use off-the-shelf USB cable in the above-standard...

hmm, then perhaps a better approach to this might be an AC adapter working with the wall outlet instead of USB power. E.g. in the worst case (assuming minimal circuit fabrication ability in the mod lab) using an off-the-shelf mass produced adapter, like for cell phone, and running its output...

f95toli, if power and current limitations you mention prevent us from using the cheap linear regulator, would a circuit that transforms USB DC to AC, steps it down in transformer and then rectifies DC for gadget input be "excessively" expensive? Or are such circuits fairly routine and doable for...