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Light Filters work the other way. They Pass the color that the filter is and block others. A Green filter only passes Green light.

The tube votage once ignited should be around 110-150 VDC depending on gas pressure. Be carefull when measuring though. The Ignitor voltage is around 15k so can easily blow your DMM up.

My working Argon had a miss-aligned front mirror. I had to make up a bracket that fitted over the front end of the tube and had 3 screws into it from the metal frame. By adjusting the screws I was able to slightly bend the front mirror mount and align the mirror. That got it working well. The...

If you keep in mind the highest output laser Diode is the Nubm44 which can do around 7.5 - 8 Watts that will give you an idea what's really going on. A 15 Watt Optical output will be at a 50% Duty cycle. The "PEAK" output is 15 Watts. But the average is still 7. 5 Watts. And a 20 Watt Optical...

The same thing is happening with IE11. The left half of the screen is quite often adds and the Thread Titles are on the righ half squashed up.

When I send money in another currency Paypal just bills my Credit card in that currency. Then my Bank does the exchange rate. Never seen Paypal do the exchange rate themselves. Never really had an issue with Paypal. They are very good at recoving money from dodgy sellers.

I wasnt following this thread anymore. I just noticed it. The link to the latest v1.5 is still working. But the Link to the full install version is not. https://laserpointerforums.com/threads/b-w-tech-spectrometer-473-module-setup-mods-info.101467/page-35#post-1529863 The stand alone exe file...

Fibe Optic communication links work in the Ghz range. That gives an idea what the diode itself is capable of.

There is one very obvious danger. I do own one and must say it's a very bright narrow beam. Obviously looking directly into the beam would be a silly idea. Do people really need to be told not to look directly at the Sun ? As far as I know there are no laser emissions so that is not an issue.

I would inagine discussing ilegal activities is why you will be banned again. At least in most contries Pot is ilegal.

In Australia Customs will confiscate the laser and send you a warning letter. If it happens again they will fine you. No doubt if you are caught once your name would be placed on a list of people to keep an eye on. The police are not involved. They are only involved if you manage to get one...

I would not say 200mw of 405nm would be clearly visible at night. I have a 1600mw of 405nm and you can see the beam along its path. But not from side on. 405nm is the lowest visibility of all the diodes we use.

The GH04W10A2GC is capable of a much higer output than the BDR 209. It can reach over 2 Watts if you have a good one. The one I have is set to 1600mw. Have a look at DTR's review. https://laserpointerforums.com/threads/sharp-gh04w10a2gc-350mw-405nm.104348/

I bought one of the 405nm 1600mw laser modules for the cheap engravers on Ebay. When i LPM'd it the output was 100mw. It was AUD $19 I did get a full refund and got to keet it. I knew when I bought it that it wasn't going to be 1600. But 100 was a joke. When the seller contacted his supplier...

Lithium batteries are never fully charged when you buy them. They are charged to a storage voltage. Storing a Lithium battery at the fully charged voltage actually causes degredation. Its always reccomended to use Storage Voltage if they are not be used for a long time. Lithium Polymer is very...

That is correct to a certain point. As long as the lab lasers are not battery operated they are legal. The Law is pretty much any Pointer or "similar device" that is battery operated. Eg, My Argon laser is perfectly legal.

There are quite a few chinese sellers that have a warehouse in Austrlia and ship from it. No customs involved. That is not correct. That exemption only applies to carrying and using. If you want to import a high power laser you need to apply for the full Import permits. And they are not easy...

As long as I stay a member of the approved astronomy club they are legal to own and use at the astronomy club meeting. That is the only place I use them now.

That is correct. The exemption is only for the carrying and using. To import them you still need to get the proper authorisation permits. I have looked at obtaining permits to import them but never went thru with it. The permit is issued by the Police. I did download and look thru the...

I will have to find it for you. I did some research quite a while ago. Lasers are controlled by the Firearms act in Australia. Not all states are exactly the same but very similar. They also have the paper work to apply for a licence to carry or import. They are reguarded as a prohibited weapon...