HERE IS YOUR FREE ENERGY. HANDLE WITH CARE.

[pese]

You are of my set Gustav 

When we were kids, every boy that was into science had three things, a Meccano set (Maerklin in Germany) a chemistry set and a crystal radio (self built, of course with air condenser and Galena crystal) It is a pity one does not see this anymore. I still have a Meccano set which I use for prototyping ideas 

Hans von Lieven

Hans , Yes this was it, also Tube receiver (Kosmos-Radioman=
the tube (RE... Telefinken), from 1930! worked with 12volt anode-voltage.
only) and 4v for the heating

But the Crystal set worked with Bleiglanz or Pyrit , with (i think) an "silver" , spring wire. on an body with bananaplugs down.

you will be happy over the following (german) link . So you can se again this diode , also an "do-it-your-self".
this diode have lower saturation voltage as germanium diode ,an worked higher efficient, BUT complicate do find the "best mechanical point for best
rectifying the LF from the RF out

Gustav

[hansvonlieven]

Sagte ich doch Gustav,

Bleiglanz  =  Galena 

Uebrigens, stimmt, da musst du den wunden Punkt suchen, deshalb sass die Silberfeder in einem Kugelgelenk

Hans

[Localjoe]

@ all
         So is my idea of finding a crystilane substance or growing one that would vibrate at a frequency possibly that of uv radiation ... or a certian spectrum of light?  If this can be done for long wavelengths like pese is talking about why not for the shorter fast ones.. come on folks .I still say that makes the most sense.
                                                                                                                                                               Joe

[hansvonlieven]

@Joe

You cannot use just any crystal. It has to be a crystal with semiconductor properties.Have a look at this, it will give you an idea how to proceed and what choice you have.    http://www.nuenergy.org/alt/super_crystal_detector.htm

This shows a number of detectors and their construction. Essentially they all consist of a crystal holder that clamps the crystal and provides good electrical contact this is connected to the circuit by a plug or wire. You also need another device that holds a fine wire, often wound partly as a spring, that enables you to make electrical contact with a very small area of the crystal. You need to search around for a SWEET SPOT on the crystal for it to work well, so there needs to be a way to move it around. It also must contain some lead to connect it to the circuit. There are several ways of doing this, most are pictured here:

http://www.nuenergy.org/alt/super_crystal_detector.htm

Here is one of the pictures. The arm on the left contains the wire or cat whisker as it was called, the cup on the right contains the crystal.



Have fun

Hans

[Localjoe]

Hans i guess im more interested in the math or science behind what exactly makes the specific  crystal in a crystal radio optimum for that freq spread and what factors define it ...With that knowledge I would possibly pay a company to design ones to specs that would suit our needs or the freq spread i would like it to be reactive to meaning the uv or higher... So i guess thats what im hunting for.
                                                                                                                                              Joe