FIRST EXPERIMENT YOUNGS EXPERIMENT Second EXPERIMENT Newtons rings

FIRST EXPERIMENT

YOUNG’S EXPERIMENT

Second EXPERIMENT

Newton’s rings Experiment

THIRD EXPERIMENT

Photometric Law of Distance

PHOTOMETRIC Principal and task: The luminous intensity emitted by a punctual source is deter mined as a function of distance. PROBLEMS: 1. The luminous intensity emitted by a punctual source is determined as a function of distance from the source. 2. The photometric law of distance is verified by plotting illuminance as a function of the reciprocal value of the square of the distance.

PHOTOMETRIC The aim of photometry experiment ▸ The luminous intensity I emitted by a punctual source is determined as a function of distance from the source. ▸ The photometric law of distance is verified by plotting illuminance as a function of the reciprocal value of the square of the distance.

PHOTOMETRIC Equipment: ▸ Luxmeter probe ▸ Optical profile bench ▸ Filament lamp 6 V/5 A ▸ Universal clamp ▸ Power supply

PHOTOMETRIC Experimental set-up ▸ Switch on the luxmeter and measure the background illuminance E 0. ▸ Set the separation r between the probe and lamp to 55 cm. ▸ Switch on the lamp and measure the illuminance E. ▸ Decreasing the separation in steps of 5 cm, record E until you reach a separation of r = 25 cm.

FORTH EXPERIMENT

Lloyd’s Mirror

Objective Understand the nature of sound-waves and calculate the frequency of ultrasonic sound−waves by Lloyd’s Mirror Interference.

Schematic representation of the interference setup

D (cm) V (V) D (cm) 4 0. 072 4. 1 Data V (V) D (cm) V (V) 5. 4 0. 061 6. 8 0. 059 0. 073 5. 5 0. 064 6. 9 0. 060 4. 2 0. 072 5. 6 0. 066 7 0. 061 4. 3 0. 070 5. 7 0. 068 7. 1 0. 061 4. 4 0. 067 5. 8 0. 069 7. 2 0. 062 4. 5 0. 066 5. 9 0. 067 7. 3 0. 063 4. 6 0. 065 6 0. 066 7. 4 0. 063 4. 7 0. 064 6. 1 0. 065 7. 5 0. 064 4. 8 0. 063 6. 2 0. 064 7. 6 0. 065 4. 9 0. 063 6. 3 0. 063 7. 7 0. 066 5 0. 062 6. 4 0. 062 7. 8 0. 065 5. 1 0. 061 6. 5 0. 061 7. 9 0. 065 5. 2 0. 060 6. 6 0. 060 8 0. 064 5. 3 0. 060 6. 7 0. 059 8. 1 0. 063

FIFTH EXPERIMENT

Meld's Experiment

Objective 1 - Generating standing, circularly polarized thread waves for various tension forces F.

Objective 2 - Determining the phase velocity c of thread waves. m*=m/L

Data m=0. 5 g L=53 cm S= 48 cm

Evaluation n 2 3 4 5 6 F( ) CF ( ) f( ) C( )

Plot

SIXTH EXPERIMENT

YOUNG’S EXPERIMENT

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