A photocell is any of a wide range of sensors that react based on the presence of light or electromagnetic energy. They can be found in many different forms, from solar panels that use light to generate electricity, to photoresistors, which shift in resistance based on how much light is present.
Bond prices and yields are like a seesaw: when bond yields go up, prices go down, and when bond yields go down, prices go up. In other words, a move in the 10-year Treasury yield from 2.2% to 2.6% indicates negative market conditions, while a move from 2.6% to 2.2% indicates positive market performance.
5. Divide the after-tax profit of your bond by the original purchase price of the bond to determine the after tax yield. Yield is an expression of profit based on comparing it to the initial investment. 1  The after-tax yield of this bond is ($450 divided by 1,000 equals) 45 percent.