I don't want to burn anything, i just want to point.
I have a 10-20mW green and a 30mW (advertised) 650nm that are bright enough and fun to play with.
i recently got an advertised 50mW 405nm, that i find not enough bright, even on white paper.
In general are real 50mW violet lasers fun to play...
Hello, i just got this 405nm keychain (although it is white and not silver).
50mw Mini Blue Beam Laser Pointer With Keychain
Unfortunately it is much dimer with a fresh NiMH (i measured 1.35V) than with an alkaline (1.45V). Can i safely put in a Li-ion 10440 ?
tried with two NiMH, the...
Li-ION 10180 100mAh 3.7V
NiMH low self-discharge AAA 800mAh 1.2V
which one has the best capacity for current draws 50mA and 250mA?
i ask this cause i want to know wich laser kaychain will have the best autonomy.
1 month ago i bought a cheap keychain:
it got suddenly very dim. i didn't expose it a high temperature, nor inverse the polarity, nor let it fall... i just let it 1 or 2 days at 10°C 50°F and when i tried to reuse...
hi, how does a radiometer reacts to the different wavelengths ?
will the rotation speed for a given output power be the same for different wavelengths ?
and for a given wavelenth, can you evaluate the output power thank to the rotation speed ?
1 532nm Green Laser Pointer Pen Pen
"Warning: Installation directory exists at: /home1/laserlan/public_html/ldcom/zc_install. Please remove this directory for security reasons.
Warning Warning: I am able to write to the configuration file...
i'm very disappointed cause i bought a 100mW star pen at FP but it seems to be no more than 20mW
are the rayfoss ones at right specs ? or is there a risk i'll get a 20mW for the price of the 100mW (55$) ?
AFTER ONE MONTH THE LASER HAS GONE DIM
(even with with fresh alkaline. the white LEDs are still working)
Focalprice.com offers 2 in 1 Red Laser Pointer+2 LED with Buckle (Pink) ,discount 2 in 1 Red Laser Pointer+2 LED with Buckle (Pink),2 in 1 Red Laser Pointer+2 LED with Buckle (Pink)...
that would finally be an useful use of burning lasers :)
edit: this is a joke. DON'T TRY THIS !
you will blind your family and neighbors !
i advice you to dismantle your 445m. it is too dangerous, this is like having a handgun ready to shoot
they are not as useful as resellers claim: the minimum angle at which a good naked eye can separate 2 points is 1' = 0.3 mRad.
so there is no need to reduce the beam divergence below 0.3mrad since whatever the real size the dot will be, it will be seen as a thin point if you stand near your...