This question is unclear because I do not know what collares are.
radars. I think not sure:( If you're not sure don't answer. They can be, indeed are, tracked by radio-transmitters fitted to collars. Radar would not work, especially in a forest!
Scientists use radio telescopes to detect and study radio waves traveling through space. These telescopes can collect and analyze radio signals from various celestial objects like stars, galaxies, and pulsars. By studying these radio waves, scientists can gain insights into the properties and behavior of objects in the universe.
the yellow star
Radio Telescope Apex
Through the media.... Internet, TV, Radio, Magazines etc.
It seems all the scientists are at a loss....what a pityfull pride-dicament.
Telephone, television, radio, and Internet all use magnets to aid the communication.
logos, by providing facts and details
Scientists communicate with spacecraft in space using radio waves. Ground stations on Earth send commands to the spacecraft and receive data from it through radio signals. These signals travel through the vacuum of space to maintain communication with spacecraft regardless of their location in the solar system.
Scientists studying wild cats sometimes give them radio collars. This way, they can keep track of its movements. By figuring out where they live, scientists can better help conservationists to protect them.
It wakes up and goes out in the wild and scientists can track it where ever it goes.
light telescopes and radio telescopes whether installed on earth or on space vehicles