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.
Automotive clearcoat.
Yes but the nobbly tyres don't grip on tarmac in the wet.
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.
light refraction
Tarmac Limited was created in 1903.
Tarmac Limited's population is 12,500.
The water fills in some of the spaces between the fibers. This water acts just like a fiber optic cable, carrying the light through the material instead of reflecting it back to your eye. Since more of the light goes through the material, less of the light is reflected back and the wet spot looks darker.
If we didn't have Tarmac roads the roads would be bumpy and dusty, the dust would go in to the air and cause people to cough and could cause crashes. The inventor of Tarmac is Edgar Hooley he invented Tarmac in 1902. Tarmac is heated and then poured on to road.
When installed, tarmac is a mixture of solid aggregate in liquid asphalt. When the mixture cools, the finished tarmac pavement is solid.
Only if... (a) you know the weight of a measured amount of tarmac - and (b) you know what depth the tarmac is. If you can calculate the volume of tarmac, and you know the weight of a specific amount - you can convert to tonnes.
It absorbs some water, so looks darker.
When the things are wet, the water fills in some of the spaces between the fibers. This water acts just like a fiber optic cable, carrying the light through the material instead of reflecting it back to your eye. Since more of the light goes through the material, less of the light is reflected back and the wet spot looks darker.