STEM Resources

Some useful STEM resources

Energy Harvest

To investigate induced EMF and to suggest designs for a power supply system for a long distance yacht using the motion of the ocean as the generator.

Equipment required:

• LogIT uLog pH adapter (set units to +/- 1250 mV)
• BNC to 4mm (or equivalent) connection leads
• Coil of wire (pre-made or use a cardboard tube and copper wire)
• Strong magnet
• Ruler or similar to mount the magnet
• Modelling clay, sticky tape or similar

Designing a Car Engine Mount

This investigation simulates the problem caused by car vibrations using a tuning fork as the engine, the base of a clamp stand as the chassis and a uLog sound sensor as the ears of a passenger.

Equipment required: 

• LogIT uLog sound sensor
• Tuning fork (256Hz was used for this example)
• Computer
• Different materials eg foam rubber, thick cardboard, felt etc
• Clamp stand
• Rubber bung or similar to strike the tuning fork

Clothing for keeping warm

To investigate the cooling effect of a liquid evaporating and to see how this can be used in the design of comfortable clothing to minimise the effect.

Equipment needed:

• LogIT uLog Temperature Sensor
• Clamp Stand or similar
• Paper towels, pipettes drip tray or mat
• Different materials for clothing eg. felt, T-shirt material etc
• Tap water
• Electric fan or similar

Calculating the speed of sound

Using the uLog Ranger, calculate the speed of sound in air and check how accurate the results are using a uLog Temperature sensor to compensate for the temperature of air.

Equipment needed:

• uLog Ranger
• uLog Temperature sensor
• Computer
• Measuring tape (optional)
• Spreadsheet or calculator

Looking at Vibrations

To investigate oscillations through a structure such as a gym bench.

Equipment needed:

• LogIT uLog sensor adapter
• LogIT Force sensor and a gym bench
• Mass to place on the force sensor (we used 200g)
• Modelling clay