7,823 reputation
11330
bio website embedinc.com/olin
location Littleton, Massachusetts
age 58
visits member for 2 years, 4 months
seen yesterday

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.


1d
answered Will the current flow from the battery?
Jun
22
answered Would a linear relationship between pump speed and the flow rate from the pump be expected?
Jun
13
comment Is sunlight truly white?
Since our vision evolved to match sunlight, and "white" is a perceptual thing based on our vision, the question is actually circular.
Jun
13
answered Please give your valuable opinion in this capacitor problem!
May
30
answered Which of the following has higher resistance - milliammeter or ammeter?
May
26
comment Has infinity been observed yet?
Yes, I started counting a few years ago and I'm almost there.
May
12
answered Gravitational force in a building
May
3
comment Electric field or static electric field around a plugged-in lamp cord (when lamp is not turned on)?
@adam: That's not what the question asked about. It clearly says prior to the wall switch being turned on. But, yes, there would be a electric field around the cord, although it would go to zero in the direction where the neutral wire is in front and the hot wire in back.
May
3
answered Electric field or static electric field around a plugged-in lamp cord (when lamp is not turned on)?
Apr
20
awarded  Enthusiast
Apr
13
comment Earth curvature refraction for dummies
@David: I don't know if just the normal vertical pressure drop is enough to account for that, but together with specific atmospheric effects it sounds possible. It would help to define the geometry of your particular test case better, how high each of receiver and transmitter were locally, how high the intermediate terrain, etc. Then we can compute how much deflection is actually required to explain it. The data should be in your question. No, I'm not going to watch some video you linked to.
Apr
13
answered Earth curvature refraction for dummies
Apr
2
answered What exactly is fire?
Feb
26
comment Why is my breath hot when i open my mouth all the way, but cold if I blow like a whistle?
@rjmess: You can think of it various ways, which ultimately should lead to the same result. Viscosity is one way to think about it. Bernoulli's principle is another.
Feb
26
comment Why is my breath hot when i open my mouth all the way, but cold if I blow like a whistle?
@rjmess: "Ambient" means the stuff that is all around. In this case you can take ambient air to mean the not-breath air.
Feb
26
answered Why is my breath hot when i open my mouth all the way, but cold if I blow like a whistle?
Feb
23
answered Predicting Polarity of capacitor in the given diagram
Feb
23
comment Can an object appropriately isolated from its surroundings become colder than its surroundings?
@Anthony: Yes, that would be interesting. Unfortunately, I don't have details. I only remember reading somewhere years ago that the ancient Egyptians used a method like this to make ice at night even when the air temperature was above freezing. It helps to be in a desert where the air is clear and the sky often cloudless.
Feb
22
answered Can an object appropriately isolated from its surroundings become colder than its surroundings?
Feb
21
comment Where do the electrons go?
It's all a big scam. The power company charges you for electrons they suck back on the next 1/2 cycle. What a racket! They sell you the same thing over and over again.