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.
Answer   There is an inverse relationship between price and yield: when interest rates are rising, bond prices are falling, and vice versa.   The easiest way to unders â¦ tand this is to think logically about an investment. You buy a bond for $100 that pays a certain interest rate (coupon).