Q. How long is the Marriage License valid?A. A Marriage License is valid for 60 days, beginning the day after it is issued. Members of the armed forces who can prove they are on active duty at the time of applying for the Marriage License can obtain a Marriage License valid for 180 days.
Lesson Summary. UV light is one type of electromagnetic wave. Other electromagnetic waves include radio waves, microwaves, visible light, and X-rays. UV light is used by humans to produce vitamin D, but overexposure to UV light can damage DNA and cause painful sunburns, cataracts, and skin cancer.
helium can be used for many different things. It can be used for advertising purposes, recreation, purge systems, and low-temperature cooling systems. Objects that float in â¦ the air, such as balloons, blimps, Other uses of helium include: - being a protective shield while growing silicon and germanium crystals.