I would guess that is the dust burning off the elements over the years.
Iridium is a metal that turns black when exposed to light and is used as a film coating for various applications, including optics and electronics.
The spiked binoculars used in the movie "Horrors of the Black Museum" belong to the fictional character Edmond Bancroft, who is the antagonist in the film. The prop likely belongs to the film studio or production company that created the movie.
Destructive interference. If the sheet is very thin, near half the wavelength of the incident light then light reflected from the top layer is out of phase with light reflected from the bottom layer. These two reflected light waves will cancel each other out.
Well, honey, Seka was a legendary adult film star back in the day, and she did indeed perform in interracial scenes. So, yes, Seka did "go black" in some of her films. It's all part of her iconic career in the adult entertainment industry.
Carbon film resistors: These are a type of resistor where a thin film of carbon is deposited onto a ceramic rod or substrate to control the flow of electric current. Carbon film coatings: Carbon films can also be used as protective coatings in applications such as anti-reflective coatings on camera lenses or as a barrier against corrosion on metal surfaces.
In the film "Black Snake Moan," the main character, played by Samuel L. Jackson, prominently uses a vintage 1954 Gibson Les Paul Goldtop electric guitar. This guitar contributes to the film's gritty blues sound, complementing the themes of struggle and redemption. The choice of this instrument reflects the deep roots of blues music that the film explores.
Black Out - film - was created in 1970.
The duration of Black Out - film - is 1.53 hours.
Black Sun - film - was created in 2005.
Black Seed - film - was created in 1971.
Black Film Review was created in 1984.
Black Roots - film - was created in 1970.
Black Fist - film - was created in 1974.
Black Dahlia - film - was created in 2006.
Black Rage - film - was created in 1972.
Penny Black - film - was created in 2013.
Black Cadillac - film - was created in 2003.