The biographical life of Tesla was shown, with all its ups and downs. His association with Edison and Westinghouse elaborated on, and how he profited from their electrical inventions. Many of his inventions were shown and described in terms of current and voltage. The fact that he was a strong proponent of alternating current, with reasons given, along with his development of biphasic electric motors and transmission without wires was discussed. Many developments which basically showed his electrical genius were given.

Review of the electric unit by viewing and discussing the life and works of Nikola Tesla

Class will begin with a review and expansion of the atomic nucleus, protons, neutrons,mesons, and the strong force. Atomic mass and atomic number was discussed in relationship to the number of neutrons and protons in the nucleus, and the ratio of neutrons to protons which creates a stable nucleus. We discussed the definition of isotopes and the ratio of neutrons to protons which allow an isotope to remain stable. Ratios above that will lead to instability and decay. The 3 types of decay, being alpha, beta, and gamma rays were discussed and the symbols for each shown.

The structure of the atom is reviewed completely before the unit on radioactivity can begin. The structure of the nucleus is of most importance for the discussion of nuclear reactions. The atomic number and atomic mass of atoms, along with the charges and makeup of the nucleons is stressed.
The theory that the nucleus with its positive protons which do not repel each other is discussed in relationship to the strong force. The parameters for the strong force to have an effect are listed.

Full period test comprised of multiple choice and fill in questions, along with evaluation and calculations regarding series and parallel circuits

The relationship between energy and work was outlined first as a general topic in physics. Electrical power was then shown to be related to the current and the voltage. The formula Power = Voltge x Current was given, and the units for each shown, along with the fact that these units together are called Watts. A few examples of determining wattage was given, as well as determining current and/or voltage if wattage is given. Calculation of the sum of wattage from 2 different appliances on the same line will cause a fuse (breaker) to shut the line was discussed. The property of electric energy, different from electric power, was shown as a rate, involving time. Electric energy = power(kw) x time(hr) which gives the kilowatt hour. The Kwh is how the electric company bills for energy. A few examples of calculating electric energy along with charges were given. Assignment is to study for test on Thursday...

Using Data from Monday's lab exercise on parallel circuits, the total resistance, total voltage, total amperage, resistance, voltage and amperage across each resistor was determined. The difference in the methods for determining the voltage, resistance and current in parallel and series circuits was outlined and examples solved for each circuit. Study for test...

We set up a demonstration of parallel circuitry using 2 light bulbs, 3 D cell batteries, voltmeter, ammeter, paper clips for connecting bulbs, and wire connectors to meters. Once set up, the voltage is measured across each resistance and compared to the total measured voltage. These should be the same. The current in amps is measured across each resistance and the total current measured. The sum of the current across each resistance should equal the total voltage in the circuit. Knowing the voltage across each resistance and the current across each resistance, the resistance in ohms can be calculated for each one. The total resistance determined by the formula 1/Rt = 1/R1 + 1/R2.

A review of series circuitry will begin the class, with Olivia drawing a schematic of a series circuit containing a voltage source, 2 bulb resistors, wire, an ammeter and a switch. The method for determination of the total resistance and voltage was reviewed. A parallel circuit is introduced and defined. the schematic is drawn and the method for determining the total resistance and amperage and voltage discussed. The differences between a series circuit and parallel circuit presented, and the advantages noted. An assignment was given to determine the current of a circuit containing a resistor in series with 2 resistors in parallel. All the required data was given

Stanford Achievement -Science section