Theoretical physicist Stephen Hawking.

Stephen Hawking is known for his brilliant theories involving black holes, quantum mechanics ... and One Direction. He is also known for his distinctive voice. (Tweet this)

Now Intel is making that voice available to the public for free. The technology -- called the Assistive Context-Aware Toolkit (ACAT) -- was developed over three years by Intel Labs for Hawking, who has suffered from amyotrophic lateral sclerosis (ALS) since he was 21 years old.