Atlas: Complete 500 exercises (assuming they are adding more)
Tesla: 10 million energy points
This is according to the related link
To earn the black hole badge on Khan Academy, you need to complete the 150 skill points in a particular subject. This means earning 150 total points by completing exercises, mastering skills, and level upping in that subject. Once you achieve this, you will be awarded the black hole badge.
He was properly called Dr. Nikola Tesla. He earn his doctorate by his work through his life.
royalties, royalties, royalties... haha its that simple
Nikola Tesla earned a bachelor's degree in engineering from the Technical University of Graz and later studied physics and mathematics at the University of Prague without earning a degree. Tesla did not have a formal education up to the doctoral level, but he pursued extensive self-study throughout his career.
To earn the Black Hole badges on Khan Academy, you need to complete all exercises within a mission. This requires mastery of all skills and concepts covered in that particular mission. Keep practicing and answering questions correctly to progress and earn the badge.
Tesla made his income by selling his patents. By the age of 40 he was allready a millonary. In his last day he spend all his income and died pennyless at 86 years old.
You can achieve Atlas by earning 150 proficient exercises and you can achieve Tesla by earning 10,000,000 (million) points. Enjoy!
Nikola's parents were his father Rev. Milutin Tesla his mother was Djuka Mandic Tesla. His brother was His siblings were Dane Tesla, Milka Tesla, Marica Tesla and Angelina Tesla.
GH
world atlas countries atlas, regional atlas
Tesla's parents Djuka Mandic Tesla and his father Rev. Milutin Tesla married in 1847.
An atlas is a collection of maps .