What does reverse polarity mean on an EKG?
When I was 20 I was having chest pains and they did an EKG. According to the EKG, I had either had a heart attack or was having a heart attack, but neither was the case. After a stress test came back normal, they said something about having polarities reversed which usually doesn't happen until one is older, just wondering if anyone else has heard of this?
How do I reverse the polarity of a magnet?
For an electromagnet invert the current flow by changing polarity on the inductance. For a permanent magnet (any, rare earth, AlNiCo, ferrite, Pt-Fe, etc) just heat it above the Curie temperature of the material and after cooling magnetize it back in the preferred direction. Above Curie's Temperature the thermal agitation of the atoms is so high that magnetic ordering is inhibited, the magnetic domains realign to annihilate.
Reverse Polarity in a circuit?
I have been searching for hours through my physics book and online for something about emf and reverse polarity :( please help me! i would greatly appreciate it Suppose the polarity of E2 in the figure is reversed Suppose the three resistors in this circuit have the values R_1 = 9.45 \Omega, R_2 = 7.18 \Omega, and R_3 = 15.5 \Omega, and that the emf of the batteries are E1 = 16.2 V and E2 = 11.7 V. What is the direction (clockwise or counterclockwise) of the current in this case? Calculate the magnitude of the current in this case. I can't post the pic but it is a square circuit, the left side of the square has battery E1, top of the square starting from the left there is R1 and next to it is battery E2, the right side of the square has R2 and the bottom of the square has R3
What is reverse polarity in welding?
Polarity: The term 'polarity' is used to describe the electrical connection of the electrode in relation to the terminal of a power source.It comes into play when we are using DC power source . Now you can ask what happens if we using AC power source, its simple polarity changes every half cycle(50:50)Straight Polarity : When the electrode is connected to the negative terminal & work piece to the positive terminal then it is termed as straight polarity or we can say Direct Current Electrode Negative (DCEN) &Reverse polarity is the vice versa of straight polarity ,Direct Current Electrode Positive (DCEP).Coming on to the effects : Refer the below imageStraight Polarity: Wide & shallow bead (less penetration depth)Reverse Polarity: Deep Penetration & narrow beadFor better rememberingElectrode Negative(EN) - Straight polarityElectrode positive (EP)- Reverse PolarityThank you!
What is meant by reverse polarity, and how can it be fixed?
Reverse polarity is referred in a condition where one or more of your receptacles are connected incorrectly. To fix the reverse polarity, check the wire connection at the outlet and inspect your receptacle. A receptacle with reverse polarity will have the white wire screwed to the hot side and the black wire will be connected to the neutral side, if that the case swap the wires and it will resolves the problem. If it persists, a licensed electrician will be needed.https://goo.gl/XXVkKf
How does reverse polarity effect DC equipment?
It could have a variety of effects.Reverse polarity in a conventional bulb flashlight would work just fine.In a drill, or other motor, it might spin backwards.An LED flashlight won't work, but might survive...Any thing even vaguely "electronic" will be damaged unless the designers incorporated protection for such reverse polarity into the design.Things like microprocessors simply can't survive reverse polarity.A while back, I mistakenly put the batteries in a cat toy in reversed (it was confusing which way to do it) and "poof", with a bit of smoke, a $22 toy was history...With a $0.03 diode, this could have been prevented and my cats would still be able to play with it...
How does the reversal of polarity affect the results of gel electrophoresis?
It causes the molecules to migrate in the opposite direction. Repeatedly changing the polarity (pulse-field electrophoresis) results in cleaner separation.
How would the reversal of polarity, effect the results of electrophoresis?
I'm not exactly sure what you mean, because there are many different ways electrophoresis is used, according to the wikipedia page: http://en.wikipedia.org/wiki/Electrophor... But, it seems that if the electric field direction would be reversed, the migration of particles would be in the opposite direction. Hope that helped a little.