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Comment Re:Use UV light and shift back up afterwards? (Score 4, Informative) 163 163

It is a matter of simplicity of optics, damage to the sample and contrast. Visible light optics are very advanced (i.e. glass lenses), but it starts to get difficult as you head towards shorter wavelenths. X rays, especially high energy (short wavelength) ones, are extremely hard to focus. Short wavelengths of light also damage biological samples (imagine UV and sunburn). A key requirement for generating an image is high contrast, use of very short wavelength light/electrons requires heavy metal staining to get good contrast, not exactly ideal for looking at a living cell.

Comment In the UK... (Score 1) 664 664

It was very rare for a student to be using a laptop in a lecture or class during my undergrad (at Cambridge in the UK, finished last year). The vast majority of students own a laptop, you would just not consider bringing it to your lectures! As far as I know this is universal across the UK.

You will lose an important tape file.

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