Depth Charge
This is another try at seeing what happens when a firecracker is detonated underwater.
It's not the most beautiful photo, but I find it interesting to see how the plastic sides of the water bottle have retracted down with the force of the explosion, leaving an unsupported column of water.
Getting the timing right on this idea is a bit harder than I thought it might be.
I ran into a snag on my new flash design this weekend. It seems that those great small cheap yellow caps I am using currently degrade fairly rapidly over time. Over about 500 flashes (estimated) the value has gone from 0.05 to 0.04uF. Over 4000 flashes the capacitance is about 0.02uF. And the light output is degraded even more than the capacitance decrease would indicate.
I think that the metal film on the capacitor layers is being "etched" away by the high current of the discharge.
Not sure what to do at this point, luckily the fate of the free world does not depend on it.
Cheers.
Depth Charge
This is another try at seeing what happens when a firecracker is detonated underwater.
It's not the most beautiful photo, but I find it interesting to see how the plastic sides of the water bottle have retracted down with the force of the explosion, leaving an unsupported column of water.
Getting the timing right on this idea is a bit harder than I thought it might be.
I ran into a snag on my new flash design this weekend. It seems that those great small cheap yellow caps I am using currently degrade fairly rapidly over time. Over about 500 flashes (estimated) the value has gone from 0.05 to 0.04uF. Over 4000 flashes the capacitance is about 0.02uF. And the light output is degraded even more than the capacitance decrease would indicate.
I think that the metal film on the capacitor layers is being "etched" away by the high current of the discharge.
Not sure what to do at this point, luckily the fate of the free world does not depend on it.
Cheers.