Laser pointer guides
Practical guides on colour and visibility, pointing out stars, playing with your cat, bird scaring and choosing the right laser pointer. A new guide appears every ten days.
Milliwatts explained: what the power figure on a laser pointer means
The mW figure on a laser pointer is optical output power in thousandths of a [...]
Oct
Laser pointer or torch: what each one is for
A torch spreads light over a surface, a laser pointer sends a collimated beam to [...]
Oct
The autumn night sky: what to point out from a British back garden
An ordered tour of the autumn night sky for a British back garden: the Summer [...]
Oct
Pigeons on winter brassicas: what allotment sites and growers can do
Netting is the only certain protection for winter brassicas, but it cannot cover a whole [...]
Sep
Bird scaring with a green laser pointer: how it works on farms, roofs and marinas
A green laser pointer moves geese, corvids and cormorants because the moving spot reads as [...]
Sep
Choosing a laser pointer for presentations and teaching
A good laser pointer is a small tool that makes a big difference when you [...]
Sep
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