Our local LIDL has an ultrasonic clearing machine for sale this week. I can see that such a device might be good for intricate jewellery, but there are also suggestions for coins and eyeware - does that mean spectacles? Finally, it is claimed to be "Ideal for Blu-ray discs, DVDs & CDs."
My thoughts about the disc comment are that most people won't have discs that are dirty enough to warrant the purchase of such a gadget, unless perhaps they have managed to smear engine oil, honey, or tree resin on to them.
Am I right?
For the technically minded, a probably superfluous piece of information is that the frequency used is 46kHz.
My thoughts about the disc comment are that most people won't have discs that are dirty enough to warrant the purchase of such a gadget, unless perhaps they have managed to smear engine oil, honey, or tree resin on to them.
Am I right?
For the technically minded, a probably superfluous piece of information is that the frequency used is 46kHz.
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