Has anyone experimented with UV beads? I would like to know how the beads change color when they are exposed to reduced levels of UV radiation. For example if the beads are placed directly in the Sun they will turn to their vivid colors immediately. If the beads are then placed in something like a medical bottle that is designed to block almost all UV radiation and left out in the Sun for the whole day, will there be a change a color at the end of the day. Or in a container that blocks 90% of UV radiation, will there be the color change after 10 times the usual duration of time. I thank everyone who can help me here.
ultra violent-visible spectroscope(uv-visual) refers to absorption of spectroscopy in the uv-visible spectral region.This means that it uses light in the visible and adjacent (near uv and infrared)NIR)) RANGES. The absorption in the visible range directly affects the perceived colour of the chemicals involved .In this region of the electromagnetic spectrum, molecules undergo 'electronic transition'. This technique is complementary to 'fluorescence spectrosopy', in that flourescen ce deals with transition from exited state to the grounded state, while absorption measures the transition from grounded state to exited state. Try and read about the "Beer Lumbert Law"
Thanks Jonte92, But could you tell me if this implies that if the UV beads change color within 5 seconds when exposed to direct sunlight, they will take 10 times longer, if the intensity of UV radiation they are exposed to is reduced to one tenth, ie. we have a blocker that allows only 10% of the radiation to pass through.
how bout this it is simple math UV. you reduce the amount of UV energy by a tenth, you are literally reducing the photonic capabilities of the radiation without reducing the surface area it is acting on.Arithmetically, these 2 potheses relate inversely thus a reduction in one factor of the equation lead to an equal increase on the other side of the equation. or you didn't mean this?
