The below is a screengrab blowup of a graphic Stefan prepared over a year ago. It is of course the CVR trace from one of RA's time-expanded oscillation shots. Stefan has colored the areas above and below the zero-voltage line.

The puzzle: How many red pixels are there? How many green pixels are there?  I don't know the answer. Yet.

(This can be determined fairly easily by most graphics programs, I think. Or you could blow the image up and count them all manually. This is Nobel-prize material, after all, you should be willing to do a little work for it.)

Report, compare, contrast, discuss.

Quote from: Rosemary Ainslie on May 16, 2012, 02:32:47 AM
I have MANY, MANY examples of your deliberate 'out of context' misquotes.

And yet... you never link to any of them. Whereas I, just like in the post to which you mendaciously refer, always do show just where your OWN WORDS COME FROM.

Like this: Note the filename: it contains your blog, and the post number. Surely you can find it from THAT.

Magsy I simply don't understand this post.

Quote from: Magluvin on May 16, 2012, 02:26:11 AM
Negative wattage and positive wattage

In circuit sim, if i scope the source for power consumption, if I connect the source to a load, the wattage of the source shows negative. Which makes sense. The source it the component that holds and provides the energy to the load. But if I apply a higher voltage source to the original source being monitored, + to + and - to - , the scope shows a positive wattage, as if the original source is being charged like a battery.

When reading a resistive load, it always shows positive wattage as it consumes power from the source or circuit any time there is a potential difference across the resistance. No matter the polarity of the current flow, it only shows positive wattage readings as it is the receiver of that wattage. It is in the plus. 

If you have ever loaded Falstads Circuit sim, the first circuit on the page is an LC resonance circuit.  Delete the cap and resistor in the LC loop. Now add 2 wires and a diode across the push button switch so that when we close the switch, the battery charges the inductor, then when you release the switch, the inductor will send the charge back to the battery. Of course orient the diode so it doesnt conduct till the inductor produces reverse emf. If you pull a scope shot for power consumed of the batt, you can see the pos and neg results when the batt discharges and recharges. Just an easy example of pos and neg batt wattage with passive components other than the battery.

If one puts a scope across a battery and then reads a negative voltage then that would be extraordinary.  Have I misunderstood you?

Regards,
Rosie

TK:

QuoteThe puzzle: How many red pixels are there? How many green pixels are there?  I don't know the answer. Yet.

It's got to be more red pixels indicating a net current flow clockwise in the circuit.  Net current flow clockwise spells curtains for Rosie Posie who speaks erroneously.

As we know, the battery voltage readings are a fake, and that is throwing off the DSO average power computation.

MileHigh

I remembered this lecture from a long time ago and I thought it might help. But then I realised that calculus is a prerequisite for Prof. Lewin's freshman physics survey. I hope YKW can make it past the 1:40 mark and see what Lewin is actually showing here.

http://www.youtube.com/watch?v=1bUWcy8HwpM