In Maine, vision testing is required at the first renewal after driver's 40th birthday, then at every second renewal until age 62, and thereafter at every renewal. In Oregon, vision testing is required every 8 years for drivers 50 and older. In Illinois and New Hampshire, applicants 75 and older must take a road test.
Bottom line: When charged particles from the sun strike atoms in Earthâs atmosphere, they cause electrons in the atoms to move to a higher-energy state. When the electrons drop back to a lower energy state, they release a photon: light. This process creates the beautiful aurora, or northern lights.
the northern lights are one of the big three natural phenomena created by our sun s magnetic activity the northern lights are caused by large numbers of electrons that stream towards the earth along a magnetic field and collide with air particles in our skythe air then lights up rather like what happens in a fluorescent light tube and what we see is the northern lights also called aurora borealised northern lights are rare but you can enjoy them in our photo gallery a more scientific explanation of what the northern lights are the northern lights are created with sufficient geomagnetic activity and form at around 60 miles high around 100 km above the earth s surface