![Let there be... -[ HMM ]- | by Carbon Arc](http://live.staticflickr.com/65535/53279112110_f20769ff67.jpg)
Let there be... -[ HMM ]-
...Light, both old-school and high-tech.
The filament structure of a classic incandescent projection lamp from a 16mm movie projector. This lamp was simple in design but very energy-inefficient (this 750-watt lamp barely had enough oomph to satisfactorily light a smaller classroom screen, albeit with a yellowish tinge; more recent xenon-arc technology enabled higher-end 16mm projectors to produce a much brighter and whiter light with the same 750 watts of power, enough for mid-sized auditorium screens). Like a similar picture I posted a year earlier, this 120-volt lamp was run at a low voltage, about 10-15 volts.
The bokeh is courtesy of a wadded string of LED Christmas lights, requiring a mere 4.8 watts to power the 60-bulb string.
Let there be... -[ HMM ]-
...Light, both old-school and high-tech.
The filament structure of a classic incandescent projection lamp from a 16mm movie projector. This lamp was simple in design but very energy-inefficient (this 750-watt lamp barely had enough oomph to satisfactorily light a smaller classroom screen, albeit with a yellowish tinge; more recent xenon-arc technology enabled higher-end 16mm projectors to produce a much brighter and whiter light with the same 750 watts of power, enough for mid-sized auditorium screens). Like a similar picture I posted a year earlier, this 120-volt lamp was run at a low voltage, about 10-15 volts.
The bokeh is courtesy of a wadded string of LED Christmas lights, requiring a mere 4.8 watts to power the 60-bulb string.