The season of preparation for Easter closed with the Great or Black Week, also known as the Holy Week. The Thursday of Holy Week commemorated the institution of the Holy Supper. Since the Gospel of the day was John 13:1-15, the day was also known as the Day of Foot Washing.
Cathode ray tube, or CRT, screens like those that were once used for computer monitors and TV sets actually do emit low levels of UV radiation. However, these levels are significantly lower than that of the sun. The fluorescent light bulb above your head emit actually emits more UV light than a CRT monitor.
Screen backlight type. Three ways to find out what type of light is in the screen of your laptop: 1. Take the screen out of the laptop and see the back of it: if there is a cable and a connector for the inverter, you have a CCFL screen, if the connector is not present, then the screen is LED.2. Refer to the owners manual of the laptop.ow to find which one is in your laptop. Three ways to find out what type of light is in the screen of your laptop: 1. Take the screen out of the laptop and see the back of it: if there is a cable and a connector for the inverter, you have a CCFL screen, if the connector is not present, then the screen is LED. 2.