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Probably not — it’s too fast for the naked eye.

The problem is that in many cases it is not evident to the naked eye and is impossible to enforce either way.

This means the colour olo could not been seen by a person's naked eye in the real world without the help of specific stimulation.

For something not visible to the naked eye, organic chemicals are a huge US export for the UK, totalling close to £3bn last year.

Even during a partial eclipse, it is never safe to look directly at the Sun with the naked eye as it can cause eye damage, including blindness.