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i believe petrol appear colored when present on wet surfaces because of its chemical composition. given that each petrol sample contain various bonds and bond angles, the presence of petrol on water (since petrol is insoluable in water), causes the light being reflected from the petrol appear in rainbow colours (ROYGBIV) since each colour has a different wave lenght
What else can I help you with?
Why do wet objects normally appear darker than the same objects when dry?
When objects are wet, they appear darker because the water on their surface absorbs and scatters more light, reducing the amount of light reflected back to our eyes. This makes the wet objects appear darker compared to when they are dry.
Why does blacktop appear wet when it is dry?
This optical illusion is known as "wet pavement effect," where sunlight reflects off the dark surface of the asphalt, making it appear shiny and wet. The contrast between the dark pavement and the surrounding environment can trick our eyes into perceiving it as wet, even when it is dry.
Why a rough surface such as a road becomes shiny in appearance and a better reflector when it is wet?
When a rough surface like a road becomes wet, the water fills in the gaps and irregularities in the surface, smoothing it out. The smooth surface of the water reflects more light, making it appear shiny and increasing its reflectivity.
Why bluestone does not appear wet?
Bluestone does not visibly appear wet because its surface is non-porous and water-resistant. The material itself is dense, making it difficult for water to be absorbed and form visible droplets on its surface. Additionally, bluestone often has a honed or polished finish, which further reduces the visibility of water on its surface.
Why do tarmac get darker when it wet?
Tarmac appears darker when wet because the water fills the pores in the surface, reducing the reflection of light. The water on the surface creates a smooth layer that decreases light scattering, making the pavement appear darker.
Why is that when things get wet they get darker even though water is clear?
When objects get wet, the water fills in the spaces between the materials, which changes how light interacts with the surface. This change in light refraction and reflection can make the object appear darker because the water on the surface absorbs more light. Additionally, water can enhance the contrast of colors on the surface, making them appear darker or more saturated.
Why do roads shine?
Roads appear to shine when wet because of the reflection and refraction of light on the smooth surface of the water. This creates a glossy effect that makes the road appear shiny.
Can a planet have a wet surface?
Probably. Any planet can have a wet surface if it's not hot.
How can you tell if cookies are undercooked?
You can tell if cookies are undercooked by checking if they are still soft and doughy in the middle, have a pale color, and appear shiny or wet on the surface.
Why does a distant patch of road appear to be wet on a hot summer day?
A distant patch of road can appear wet on a hot summer day due to the heat rising from the heat road surface. It refracts (move, bend, or deflect) the image of the road in a wavy manner creating the illusion of water.
Why outer surface of a cooled bottle gets wet at room temperature?
When a cool bottle is exposed to room temperature, moisture in the air condenses on the colder surface of the bottle due to the difference in temperature. This forms tiny water droplets on the outer surface of the bottle, making it appear wet. It's similar to how dew forms on grass in the morning.
What is a wet fly?
Wet flies do not float long on the surface of the water, and are worked beneath the surface for trout and other species.
