Sextants are still available, and are a practical low-tech backup for when a boat's GPS and other electronics stop functioning.
So if you're a ship's captain, or even just a serious hobbyist, it's well worth it to take the time to learn how to operate one.
Navigation technologies in the age of Heroic Exploration included sextants, theodolites and other celestial navigation tools.
Yes, Space Shuttles carried people into space for many years. Today they have been retired and are no longer in use.
Why do you think? Light bulbs are cheaper, produce more light, don't require matches to light and don't produce waste products such as carbon dioxide. The discovery of electricity made light bulbs possible.
The weather is cloudy today.
Today's microscopes use convex lenses.
as in?
Sextants
the people living in Australia today re use.
as in?
answer please by today!!!
People still use carriages today.
Nowadays it is easy because of GPS, but in the olden days they had to use real navigation techniques with sextants and magnetic variation charts.
Navigation technologies in the age of Heroic Exploration included sextants, theodolites and other celestial navigation tools.
we use it for food
To get a double image, which is then focused until one gets coincidence. Sextants, some camera rangefinders, etc make use of this beam-splitting principle.
they use it for copying people and animals
Yes people still use bipolar junction transistors today because of its high switching speed.