Mikkel Christensen
Radiation often sounds alarming, but tiny amounts of radioactive material are actually found in many common household items people use every day.
Radiation often sounds alarming, but tiny amounts of radioactive material are actually found in many common household items people use every day.
Experts say the low levels found in consumer products are generally harmless and are often essential for how the items function.
Watches can contain radioactive gas
According to BGR, some glow-in-the-dark watches contain small amounts of tritium gas sealed inside tiny glass tubes.
The radioactive material helps illuminate watch faces without needing an external power source.
Experts say the radiation levels are extremely low and unable to penetrate human skin.
Exit signs glow for a reason
Many commercial exit signs also rely on tritium to remain illuminated during power outages.
The gas reacts with phosphor lining inside sealed tubes, creating the constant glow seen in offices, apartment buildings and public spaces.
Because the radioactive material is fully contained, experts say the signs do not pose a health risk under normal use.
Smoke detectors use radioactive material too
One of the most common radioactive objects found inside homes is the smoke detector.
Many detectors contain a tiny amount of americium-241, which helps detect smoke particles by ionizing air inside the device.
The radioactive component is heavily shielded, and specialists say the exposure level is extremely small.
Some gemstones are exposed to radiation
Radiation is also used in parts of the jewelry industry to enhance the appearance of gemstones.
Certain colorful gems, including some diamonds and sapphires, are treated with radiation to intensify their color before being sold.
US regulations require gemstones treated this way to undergo safety testing before reaching consumers.
Even bananas contain radiation
Naturally occurring radioactive isotopes can also be found in food, including bananas.
The fruit contains potassium, and a tiny portion of that potassium exists as radioactive potassium-40.
Scientists say the amount is incredibly small, with experts often using the “banana equivalent dose” to explain just how low everyday radiation exposure usually is.
Radiation is more common than many realize
Experts stress that radiation itself is a natural phenomenon found throughout the environment in extremely small quantities.
The danger comes from large-scale exposure, not from trace amounts found in consumer products or foods.
From watches and smoke detectors to gemstones and fruit, low-level radioactive materials continue to play a role in many everyday items.
Sources: BGR
