The LED will only emit light when its wires are connected to the battery in
the correct direction. When it's flipped, it doesn't shine. The designations
of its "legs" ... or wires, or terminals, or leads ... tells you which side of the
battery each one must connect to, if you want it to shine.
Chat with our AI personalities
Anode and cathode. Anode = negative lead, cathode = positive lead.
LED's are DC voltage. Transformers are AC voltage. There is no positive or negative on AC voltage. You would need a diode to change the AC to DC, then there would be positive and negative voltages.
On an LED, one leg will be shorter than the other. The shorter leg is the negative polarity.
It looks like this question may be filed in the wrong spot. While it includes a "golden ratio," and therefore looks like a math question, it is really about relationships. John Gottman is a researcher and expert in relationships, particularly marriage. In studying couples, Gottman began to recognize and quantify symptoms that led to marital distress and eventual divorce. In that process, he also identified the opposite: how can marriages be improved and saved? And herein lies the "Golden Ratio." The ratio is of positive interactions to negative interactions. Or in mathematical formula (Positive interaction)/(Negative interaction). Dr. Gottman determined that for every negative interaction, there are five positive interactions in healthy couples (or couples that want to move toward health). The beauty of this ratio is that it demonstrates 1) that healthy couples are not without painful moments, and 2) you can do something to improve a distressed relationship, simply by focusing on more positive interactions. So the short answer is 5/1 positive to negative interactions. Lee H. Baucom, Ph.D. Creator, <a href="http://savethemarriage.com">Save The Marriage System</a>
The simplest answer is: E is energy, m is mass, and c is the speed of light in a vacuum. But what does this really mean? Well, to be correct, Einstein's full equation is: E^2 = (mc^2)^2 + (pc)^2, where p stands for momentum. This equation applies to much more than the colloquial E = mc^2. It applies to moving objects, explains why mass drops when two atoms join together, and many other relativistic observations. Also, a very important point is that, because both sides of the equation are squared, solving for E (energy) yields to answers, a positive one and a negative one. This realization is what led to the hypothesis and eventually the discovery of anti-matter, which posses negative energy and/or mass.