As far-fetched the idea that she's a nuclear scientist . . .
Why? Because she looked like a PLAYBOY centerfold in a T-shirt and shorts? Are female nuclear scientists supposed to be 30 or 40 something women with plain features and a boyish figure? Denise Richards was at the right age to portray a young scientist. And she handled the technobabble rather well. She is not in Sophie Marceau's class, as an actress. Then again, she didn't resort to hammy acting, the way Marceau did in the movie's last half hour.
I had no problems with her.