What is the difference between a simple and a compound microscope?
What is the difference between a simple and a compound microscope?

What is the difference between a simple and a compound microscope?
Who invented the simple microscope?
What is a simple microscope?
Which scientist used a simple light microscope?
Which scientist used a simple light microscope and saw microorganisms in pond water?
How does an HPLC work?
How to read HPLC chromatogram?
What does HPLC measure?
What elutes first in HPLC?
What is HPLC?