Practical Biology. This website is for teachers of biology in schools and colleges. It is a collection of experiments that demonstrate a wide range of biological concepts and processes. Experiments are placed within real-life contexts, and have links to carefully selected further reading. Each experiment also includes information and guidance for technicians. Biology is a practical science. We have published a new set of resources to support the teaching of practical science for Key Stages 3-5. Unfortunately, we are unable to respond to questions from teachers, technicians or students on how to use the experiments on this website. Welcome - Science & Plants for Schools. ChemSpider | Search and share chemistry. Virtual Sound Level Meter. Online Tone Generators - Highest Quality. Definition Also known as a test oscillator, function generator or waveform generator, a signal generator delivers an accurately calibrated output with adjustable frequency and amplitude.
AudioCheck.net provides various signal generators optimized for use in audio and acoustics applications. Those specialized signal generators are often referred to as tone generators. Generating waveforms properly is not an easy task. Our generators deliver the purest tones instead of the best-looking waveforms. Usage Unlike our other sections, the output of our tone generators will be downloaded straight to your computer as a .wav file. If you are looking to play audio tones straight from your web browser, please refer to our section labelled Sound Tests & Audio Test Tones. Virtual Oscilloscope: Interactive Simulation of an Analogue 20 MHz Oscilloscope - How to use an oscilloscope / how to use the oscilloscope (manual, oscilloscope simulation / oscilloscope tutorial)