Illegal downloading of songs is all the rage these days but should the record companies be up in arms? In the beginning there was Thomas Edison’s phonograph with the cylindrical records that, although amazing for their time, sounded awful. There was no electronic amplification and the player had to cranked by hand to [...]

GCSE Science – explaining results mathematically?

I’m doing some practice coursework at the moment in Science, so we’re allowed help but I forgot to ask Miss about this in the lesson..
I have two tables, and in the mark scheme it says to “explain your results mathematically” and when Miss marked my work she said I didn’t [...]

Discuss sources of error and improvements to the experiment below?

Simple Colorimetry to determine the Enthalpy of Combustion of an Alcohol.
The method -
1. Weigh accurately 100g of water into a calorimeter and clamp it so that the spirit burner will fit comfortably under it.
2. Record the steady temperature of the water.
3. Half fill the spirit burner [...]

Should I get a Turntable with USB, or one with the ability to read vinyl?

Right now I am torn between getting a Numark HDX Turntable (with USB), or a Numark X2 (which can play vinyl). Both boast the same features besides the ones stated. I am not going to ask which is better but I [...]