Assertion: ultraviolet's wavelength | /r/CapableOf | approach 300 nm
Facets:
Source sentences:
text: UVA radiation causes little or no immediate reaction, but at wavelengths near the start of the UVB band (315 nm), photokeratitis (a painful eye condition) and skin redness (lighter skin is more sensitive) start to occur with rapidly increasing damage as wavelengths approach 300 nm.