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[166] [167] Items known as "fruits" grant the player various advantages and disadvantages in battles against powerful enemies and bosses. [168] The game has been described by VG247 to be "one of the most content-packed games on Roblox", [77] and the game itself has been played over 31 billion times as of March 2024. [‡ 16] [non-primary source ...
To exhibit its luminescence, the luminol must be activated with an oxidant. Usually, a solution containing hydrogen peroxide (H 2 O 2) and hydroxide ions in water is the activator. In the presence of a catalyst such as an iron or periodate compound, the hydrogen peroxide decomposes to form oxygen and water: 2 H 2 O 2 → O 2 + 2 H 2 O H 2 O 2 ...
Roblox occasionally hosts real-life and virtual events. They have in the past hosted events such as BloxCon, which was a convention for ordinary players on the platform. [98] Roblox operates annual Easter egg hunts [99] and also hosts an annual event called the "Bloxy Awards", an awards ceremony that also functions as a fundraiser. The 2020 ...
Cryoluminescence, the emission of light when an object is cooled [6] (an example of this is wulfenite) Photoluminescence, a result of the absorption of photons Fluorescence, traditionally defined as the emission of light that ends immediately after the source of excitation is removed. As the definition does not fully describe the phenomenon ...
The dragonfish species which produce the red light also produce blue light in photophore on the dorsal area. [74] The main function of this is to alert the fish to the presence of its prey. [ 75 ] The additional pigment is thought to be assimilated from chlorophyll derivatives found in the copepods which form part of its diet.
The photophores emit a weak blue, green, or yellow light, and are known to be arranged in species-specific patterns. In some species, the pattern varies between males and females. This is true for the luminous caudal patches, with the males' being typically above the tail and the females' being below the tail.
Bioluminescent bacteria are light-producing bacteria that are predominantly present in sea water, marine sediments, the surface of decomposing fish and in the gut of marine animals. While not as common, bacterial bioluminescence is also found in terrestrial and freshwater bacteria. [ 1 ]
For example, white paint absorbs very little visible light. However, at an infrared wavelength of 10×10 −6 metre, paint absorbs light very well, and has a high emissivity. Similarly, pure water absorbs very little visible light, but water is nonetheless a strong infrared absorber and has a correspondingly high emissivity.