UV light is not dangerous

UV light is not dangerous.. Its a claim that i made few days ago from prior knowledge about the UV.. UV or ultraviolet as claim by Wikipedia is an electromagnetic radiation with a wavelength from 400 nm to 100 nm, shorter than that of visible light but longer than X-rays. Though usually invisible, under some conditions children and young adults can see ultraviolet down to wavelengths of about 310 nm. The UV is emitted by the sun but it also can be emitted artificially by the UV lamp.

The prior knowledge that leads me to a conclusion that UV lamp is not dangerous is -

1. UV lamp is used for tanning
2. UV lamp is one of treatment for psoriasis. 
3. UV lamp for jaundice
4. Fluorescent lamps emit UV ray 

Making this statement somehow trigger me to do more reading and more finding about the UV light. The level of dangerous-ness of UV light is actually depends on how much we were exposed to it and the wavelength of the ray. Believe it or not, some of the fluorescent lamp did emit UV ray and we are exposed to it everyday, Found this website on Positive and negative effects of UV. Anyhow, after reading and more reading UV light is dangerous but still beneficial in someway. Low level of emittance and short exposure would be okay. For a simple reading and understanding of UV light you may read on the wikipedia. The light comes in different wavelength and frequency.. That's what make it infrared, visible, uv and xray.. every light have the range of different range and the range will effect differently according to emmitance... 

Anyhow, Sir and Madam, I would like to apologize for any misunderstood on our miscommunication earlier. Thank you..

Notes: The statement is solely based on my prior knowledge and nothing to do with the organization (that why there is no flyers since they are very particular on releasing the knowledge so that only the right knowledge is delivered)

** I am a student that is still learning and still young to know the world.

** I apology for any harm