At home density test - Specific Gravity
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- čas přidán 9. 10. 2023
- At home density test - Specific Gravity
Dry weight / Submerged Weight = Specific Gravity
The home version isn’t perfect, but it would catch many of the common metal fakes.
A 0.01g string error puts this at a 10.494
Fun to play with and kind of magical that someone thought of this.
Always best to use multiple testing methods.
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If you or someone you know would like to test metals with a Pocket Pinger, they’re available at CoinPingTest.com, Amazon, and eBay.
Disclaimer: All the risks associated with pinching a coin in between your fingers and then tapping it with plastic and/or wood are present when using the device. The ping test is used for alloy identification. Always compare the sound of a potential counterfeit with the sound of a known authentic or trusted data base. Any difference in sound is a strong indication that further testing is needed. Always use multiple testing methods.
The Pocket Pinger has helped catch over 100 fake coins, all confirmed.
If you catch one with yours please reach out. There’s a valuable lesson to share in each story.
Dozens of Pocket Pinger demo videos can be found on the profile.
A simple ping test really can save you from a counterfeit situation.
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Happy hunting.
Test your stack.
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Now thats a cool trick!
Where can I get this test kit?
طريقة جيدة
Its hanging on twine. There is no weight. To get SP yoi have to measure the weight and volume of the water it displaces so you can compare densities.
The coin experiences buoyancy. By hanging it from a twine and fully submerging it, what you're essentially measuring is the weight of the displaced water.
@@santivargasfOnly if collect that water and measure it.
@@santivargasf why? I dont get it.
@@zicho1st When submerged, water will try to "push" up the coin, but this upwards force is lesser than the weight of the coin. Since the coin hangs from twine, the twine will experience the downwards force of the coin's weight, minus the upwards force of the coin's buoyancy. Because of this, the scale won't weigh most of the coin's weight.
However, the displaced water ends up weighing down on the water container. Therefore the weight scale will weigh not only the weight of the water jar and the weight of the initial amount of water; it will also do so for the weight of the displaced water.
This weighting technique only works as long as the coin hangs from anything that is not attached to or weighting down on the water container or the weight scale. This is because the twine ends up substracting most of the weight of the coin from the scale.
@@whiskey_tango_foxtrot__ Not necessarily! The extra water from the volume of the coin weighs down on the water jar, so the scale will pick up on the weight difference.
How does it work, what is 3 g?
density for water is 1g/1ml
3g is the amount of water displaced by the coin or you can say 3ml water is displaced.
It implies that the silver is denser than water since the coin displaces less water for a given mass. Typically, precious metals like silver are denser than water. The density can be a characteristic property used to identify materials. 31.38 ÷ 3.00 = 10.46
So was this coin fake?
No it was not