There is a form of light that is very energetic and can cause damage to living cells and tissues. The Sun emits this type of lig
ht, but much of it is blocked by ozone in the atmosphere. Because this type of light can be so damaging to cells, it is often used to kill bacteria in drinking water. The light is shined on contaminated water, and this makes the water clean and healthy for drinking. What type of light is this?
The Sun emits this type of light, but much of it is blocked by ozone in the atmosphere so the light is between infra-red n ultra-violet w visible light in between.
it is often used to kill bacteria in drinking water - ultra-violet light is used routinely for that purpose.
Ultraviolet light. It can cause skin cancer and that is why we wear sunscreen. We also wear sunglasses because some research has shown that it can damage eyes. Although it can be dangerous, it can also kill certain bacterias.
To create an electric potential difference between the ends of the conductor.
Explanation:
For current to flow, there must exist an electric potential difference between the ends of the conductor. This PD is provided by the electromotive force stored within the battery. Unless there is a connection between the terminals no PD will exist between the terminals.
