Swanson's law Swanson's law Swanson's law is the observation that the price of solar photovoltaic modules tends to drop 20 percent for every doubling of cumulative shipped volume. At present rates, costs halve about every 10 years. It is named after Richard Swanson, the founder of SunPower Corporation, a solar panel manufacturer. Swanson's law has been compared to Moore's law, which predicts the growing computing power of processors. Crystalline silicon photovoltaic cell prices have fallen from $76.67 per watt in 1977 to $0.36 per watt in 2014. Plotting the module price (in $/Wp) versus time shows a dropping by 10% per year.
Manning rule both in normal trading hours and in the extended hours trading sessions. The rule is named after William Manning, a co-founder of Manning & Napier (an investment management firm), who has been an advocate for investor protection. Manning rule The term Manning rule is the informal name for a financial industry rule in the United States: Financial Industry Regulatory Authority (FINRA) regulation, Rule 5320. It prohibits a FINRA member firm from placing the firm's interest before/above the financial interests of a client. For example, when a securities firm is holding a customer limit order (an instruction to buy or sell