Лекция: DRAFT PAPER

[EG1]Objective 4A. 1: explain the formation of a stationary wave using a graphical method, and identify nodes and antinodes;

[EG2]Objective 4A.2: show an understanding of experiments that demonstrate stationary waves using microwaves, stretched strings and air columns

[EG3]Objective 4A.5: show an understanding of the conditions required if two-source interference fringes are to be observed

[EG4]Objective 4B.1: understand that stars are classified by luminosity and relate brightness and apparent magnitude;

[EG5]Objective 4B.2: define apparent and absolute magnitude in terms of m;

[EG6]Objective 4B.3: define absolute magnitude of a star as the apparent magnitude when the star is at 10 parsecs;

[EG7]Objective 4A.6: recall and solve problems using the equation λ=(ax )/D for double-slit interference using light;

[EG8]Objective A4.7: recall and solve problems using the formula d sinθ=nλ and describe the use of a diffraction grating to determine the wavelength of light (the structure and use of the spectrometer are not included);

[EG9] [EG9]Objective 4B.4: use Stefan’s and Wien’s Displacement Law to solve problems on estimation of black body radiation and the area needed for sources to have the same power output as the sun;

[EG10]Objective 4B.4: use Stefan’s and Wien’s Displacement Law to solve problems on estimation of black body radiation and the area needed for sources to have the same power output as the sun;