The latest Oppenheimer film has come under fire from a feminist researcher who asserts that there are no female characters that speak until 20 minutes into the film.

This past weekend saw the premiere of the film, which examines the life of J. Robert Oppenheimer, the man responsible for developing the atomic bomb.

Also Read: How did Oppenheimer’s “I’m become death” quote cause controversy in India?

Dr. Tanya Roth criticized the movie on Twitter for its lack of female representation in the first 20 minutes. On Friday, the expert on woman’s history said: ‘Fun fact: no women speak until 20 minutes into Oppenheimer, and then within a minute there’s a sex scene.’ She also followed this up with: ‘To add to this: no people of color appear for at least 30 minutes, and I believe there are 2 black men in the entire movie.’

Also Read: Who is André Murillo, husband of Grammy Award winner Tori Kelly?

The title role is played by Cillian Murphy in the movie. Robert Downey Jr., Emily Blunt, Matt Damon, and Florence Pugh are part of an ensemble cast. Additionally, it is the first time that director Christopher Nolan has ever used a sex scene in one of his movies. Before filming the sequences with Pugh and Murphy, Nolan stated that he was “appropriately nervous and appropriately careful.”

According to Nolan, the intimate interactions helped develop the bond between Oppenheimer and Tatlock, whose affiliation with the American Communist Party raised questions about whether Oppenheimer was a Soviet spy.

Also Read: Is Sean Avery in Christopher Nolan’s Oppenheimer? Ex-ice hockey star’s rumored casting explored

He said: ‘When you look at Oppenheimer’s life and you look at his story, that aspect of his life, the aspect of his sexuality, his way with women, the charm that he exuded, it’s an essential part of his story.’

The representation of women in the movie has sparked a debate on social media, with people using the Bechdel test to assess the film. The Bechdel test is a method for determining whether or not a movie or other work of fiction portrays women in a sexist or stereotypical manner. A piece of writing must include at least two women in it, they must talk with one another, and their topic of conversation must not be about a man for it to pass the Bechdel test.