Wet Skin May Increase Risk Of Sun Burn
To the gardening world it may have always been considered a fact, but science has never proved the widely held belief that watering your garden in the midday sun can lead to burnt plants. Now a study into sunlit water droplets, published in New Phytologist , provides an answer that not only reverberates across gardens and allotments, but may have implications for human sunburn.
The team conducted experimental studies to determine how the contact angle between the water droplet and a leaf affects the light environment on a leaf blade. The aim was to clarify the environmental conditions under which sunlit water drops can cause leaf burn.
These experiments found that water droplets on a smooth surface, such as maple or ginkgo leaves, cannot cause leaf burn. However in contrast the team found that leaves with small wax hairs are susceptible to leaf burn. This is because the hairs can hold the water droplets in focus above the leaf’s surface, acting as a magnifying glass. The latter not only partly confirms the widely held belief of gardeners, but also opens an analogous issue of sunburn on wet human skin.
It seems that drying off thoroughly when you get out of the water may both prevent a chill – and a burn.
