history
who made the first mobile phone
Martin Cooper
are eyes good or bad at blocking blue light?
bad(really bad)
how do phones make kids responsible?
parents would trust kids that they wont do anything wrong, so kids must be responsible
what was Russia's first cellphone like?
similar to a modern one
how does limiting screen time help prevent blue light?
less screen time=less blue light
about how many people have access to a phone?
6 billion
who and IBM made the first smartphone?
Bellsouth
what are some blue light filter apps?
twilight and darker
what is a disease that cellphones cause?
whatever i said before
in world war 1, what did German military do?
test wireless phones in a train
name 3 effects i talked about
Can make a painful sunburn, Causes a tissue growth to form, contributes to digital eye strain, Makes you sleep later, and Eyes are not good at blocking it
phones are good for learning. what are some websites? name 2
ABC mouse, PBS kids, national geographic kids, and much more
when was the Motorola DynaTAC available?
1984
UV light causes a tissue growth to form on what?
the cornea
smartphones are expensive. how much does an average one cost?
$363