Late 1600s – Dutch scientist Antonie van Leeuwenhoek constructed a microscope with a single spherical lens. It magnified up to ×275. 1800s - the optical quality of lenses increased and the ...

However, this requires very expensive microscopes. ONE microscopy relies on a magnification of the sample volume in order to circumvent this diffraction limit. Cells and the structures they ...

Encourage children to love science by showing them the world in miniature with some of the best microscopes for kids — here are our favorite models. The best microscopes for kids allow children ...

The trunk of each 'Christmas tree' (a transcription unit) represents a DNA molecule; the tree branches (granular strings attached to the DNA) are RNA molecules that have been transcribed from the ...