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light

This tag is associated with 4 posts

Shining a light on dust

It’s a commonly seen phenomena, dust particles sparkling in a narrow beam of light, but why does this happen? Mostly, this is a result of our ability to perceive contrasts and the ability of the dust particles to reflect light. Let’s start with the latter point. Light is reflected or absorbed by surfaces. We experience … Continue reading

Making Smarter Microscopes

I always joke with my students that the biggest difference between me and them when approaching a microscope is that there is nobody I can call for help with finding what I’m looking for. This might seem trivial, but I firmly believe that the microscope smells fear. When I walk up to it with confidence, … Continue reading

The wake up light works for me

Last summer I looked into the research on wake up lights. As a very not morning person who goes to work early every day I was looking for any sort of tool that could make the morning more bearable. Based on what I learned (you can read the post here) I took the chance and … Continue reading

Whiter than white? Not with LEDs

I have bought your paper with a high percentage of post-consumer recycled content for several years. I don’t typically notice that anything is different until I see my paper up against someone else’s; that’s when I see that white is not always white. But it turns out that manufacturers of things like paper and laundry … Continue reading

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