New Sound Test Could Spot Fake Gold Coins Instantly
This could save you from buying counterfeit gold—no lab or expert needed.
Deep Dive
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Key Points
- New sound-based test measures how fast sound travels through a coin to check if it's real gold.
- A correction factor accounts for the coin's design, making the test accurate for real coins.
- Could soon be a portable, cheap way to spot fake gold without damaging the coin.
Why It Matters
This could soon let anyone verify gold coins quickly and cheaply, reducing fraud and making gold trading safer.