X-rays with Selotape....... X-ray your Finger......Triboluminescence

You can generate X-rays by peeling seloptape that could X-ray your finger, through a process called triboluminescence.

Triboluminescence

Triboluminescence is a phenomenon of light. Light is generated when chemical bonds in a material are broken in some way, through pressure, friction or stress usually. There is still research being conducted on this field, but it seems that the light is generated when there is a seperation then unification of electrical charges in the material.

Some example of this can be seen when breaking sugar crystals, applying pressure to quartz and peeling selotape in a moderate vacuum (less air). Below is a video from youtube where the machine is rotating a metal head on a block of quartz, pressure is applied with friction and this causes the bonds to break in the quartz eventually breaking the rock.

Its a beautiful example of triboluminescence:

Selotape and X-rays

As I mentioned it is possible through this phenomenon to create X-rays that are powerful enough with energies that can penetrate your finger and have the ability to create and X-ray image like in the hospital.

Lightening can cause X-rays it has a voltage of the 100,000 Volts, but the selotape can generate X-rays with 50,000 Volts. It's not dangerous as the Voltage does not carry a high charge or Current.

There are electrical bonds between the srufaces of the layers of selotape, and when pulled apart quickly they emit light through triboluminescence. The peaks in the x-ray emissions were about 15 Kilo Electron volts, but the emission seemed to occur when the surfaces were seperated by a distance of 100 micro meters after pulling the tape.

If you had a sensitive x-ray plate and imaging device, you could use these x-rays produced by the selotape to produce an x-ray image of your finger. The reason a finger is being specified is due to the relativiley small size compared to a thick leg. If you want X-rays to travel deeper then you need higher energy x-rays. There is a term called attenuation, it is basically the loss of energy as a wave travels through a medium. An x-ray with certain wavelength and energy will be loss energy through attenuation in material. If the attenuation factor is different or the x-ray energy is different then the x-ray will lose energy in a different way.

Like i said it's still a researched field and there may be some practical uses in the furture. Check out the references ad watch the videos for greater understanding.

You can watch a video that explains this in greater detail here:

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Image Sources:
[1]

References:
[1], Crystals and Triboluminescence
[2], Correlation between nanosecond X-ray flashes and stick–slip friction in peeling tape