4,632 reputation
419
bio website embedinc.com/olin
location Littleton, Massachusetts
age 57
visits member for 1 year, 2 months
seen 19 hours ago

Electrical engineering consultant specializing in microcontrollers and the circuitry around them. Master of engineering in EE from Rensselaer Polytechnic Institute in 1980.

We are certified Microchip design partners, and have been in the top catagory consistantly since around 2000. Various free downloads related to developing PIC firmware and other things are available at http://www.embedinc.com/pic/dload.htm.


Feb
19
comment What jobs can you get after Studying Physics at University?
Even someone with a physics major can wash windows, mop floors, and take out the trash, so there is always something. For a better job, you have to be able to do something actually useful.
Feb
19
answered Two suns, one moon, and one planet?
Feb
19
comment objects distorted by the earths curvature
The earth's curvature doesn't distort anything, at least not at human scale. At most these "chairs" will be at different tilts relative to you, assuming they are level at the other places you are trying to model. This question makes little sense.
Feb
17
answered Energy to move The Earth to mars' orbit?
Feb
16
comment Is voltage important when creating a magnetic field?
The magnetic field strength is proportional to the current and the number of turns. However, the wire won't have 0 resistance, so a certain steady current will require some fixed voltage.
Feb
16
comment Reducing Eddy current losses
Eddy currents aren't about the magnetic hysteresis of the material.
Feb
16
answered Reducing Eddy current losses
Feb
14
answered Why does a faraday cage protect you from high currents?
Feb
14
answered rectlinear motion with constant acceleration
Feb
11
awarded  Yearling
Feb
10
comment Why does a star collapse under its own gravity when the gravity at its centre is zero?
It's the pressure at the center that causes collapse. That pressure is brought about by gravity, but it is the pressure at the center that causes further squishing.
Feb
7
comment What would happen if a supermassive blackhole at the center of a galaxy evaporates?
Two problems: 1 - Large black holes "evaporate" slower than small ones. The really big black hole at the center of our galaxy will take so long to evaporate that there won't be a galaxy anymore. It will be there longer than the half lives of various sub-atomic particles. 2 - Black holes aren't a "source of energy". Their gravitation contributes to holding the galaxy together, but they aren't "powering" the galaxy somehow.
Feb
6
comment Does decreasing the length of the line between a harness and zip wire increase the velocity at which you travel?
@Philipp: Right, accelleration due to gravity is the same regardless of weight. If the friction is proportional to weight, then that cancels out too. I don't know how significant friction of the pulley is. They could be made with reasonably insignificant friction for this purpose, but maybe they aren't. How much that varies due to weight is another question.
Feb
6
answered Does decreasing the length of the line between a harness and zip wire increase the velocity at which you travel?
Feb
6
comment Why does the windshield of my car freeze even if the outside temperature is above freezing?
@Michiel: We shouldn't have to decide whether some other meaning than the clearly stated one is "obvious" or not. Those that can't write clear questions that ask what they mean to ask don't belong here.
Feb
6
comment Why does the windshield of my car freeze even if the outside temperature is above freezing?
The windsheild doesn't substantially "freeze" more or less for normal differences around 0C. It will remain solid for practical purposes over the full range of normal windshield operating temperatures, including well below and well above freezing. Actually a windshield contains other materials than glass, but these don't substantially "freeze" or not freeze over the normal operating temperature range. Your question therefore makes little sense.
Feb
3
answered Does the velocity of a light source influence the light
Feb
2
answered Finding the height of a power-line
Jan
30
comment What mechanisms require the use of different polarities in DC welding?
I doubt this has anything to do with heating, but more about trying to repell certain ions in the gas from the piece being welded. Just a guess though.
Jan
30
revised Why does a flat clover-like shape fall slower when it is rotating?
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