Hands-On-Physics

Haze
Core Project:
TOOLS & MATERIALS

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Tools Needed:

• Standard (slot-type) screw driver
• Cross point (Phillips) screw driver
• Long-nose pliers
• Drill or drill press (Fiskars hand-cranked drill works fine)
• Drill bits: 3/32-, 5/32-, 15/32 (or 1/2-), and 5/16-inch (or metric equivalents)
• Sharp hobby knife
• Metric ruler
• Marking pen or pencil

Materials:

Case parts:

• 3 Angle brackets (Stanley 1" corner braces)
• 5 #6-32 3/8-inch screws (for angle brackets and battery holders)
• 5 #6-32 hex nuts (for angle brackets and battery holders)
• 4 #4-40 1/2-inch screws (for breadboard)
• 4 #4-40 hex nuts (for breadboard)
• 1 VHS/Beta video cassette case (Pride brand from Wal-Mart)

Electrical parts:

• 1 741 operational amplifier (Radio Shack 276-007)
• 1 3,900,000-ohm resistor (Radio Shack 271-1354)
• 1 Green LED (Radio Shack 276-022A)
• 2 9-volt battery connector clips (Radio Shack 270-325)
• 2 9-volt clip-type battery holders (Radio Shack 270-326)
• 1 Solderless breadboard (Radio Shack 276-175)
• 2 Output terminal posts (Radio Shack 274-662A)
• 1 Toggle switch with screw terminals (Radio Shack 275-1533A)
• 2 7-cm lengths 20AWG red solid wire (Radio Shack 278-1222)
• 1 7-cm length 20AWG black solid wire (Radio Shack 278-1222)
• 1 9-cm length 20AWG red solid wire (Radio Shack 278-1222)
• 2 9-cm lengths 20AWG black solid wire (Radio Shack 278-1222)
• 1 10-cm length 20AWG red solid wire (Radio Shack 278-1222)
• 1 10-cm length 20AWG black solid wire (Radio Shack 278-1222)
• 1 #60 3M Coarse sand paper (to roughen end of LED)
• 2 9-volt batteries

REQUIRED ACCESSORIES:

• Voltmeter (digital output preferred)
• Scientific calculator (with natural logarithm (ln) and sine (sin) keys)