Light in the dark movie

Urine Colors Explained

In stage 3 kidney disease, protein or blood may be present in urine, making it foamy, dark amber, pink, or reddish in color.

How to find hidden cameras using mobile phones

Detecting infrared lightSome sneaky cameras use infrared light to see in the dark. This type of light is invisible to our eyes but not to all phone cameras. Here's what to do: In a darkened room, open your phone's camera app.

What to know about the magical mystery of the glowing sea

When luciferin mixes with oxygen, it produces light. This is similar to how fireflies glow in the dark. The light produced is called "cold light" because it doesn't produce heat like a light bulb does. Where can you see the glowing sea?
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