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The reluctance of women to enter STEM fields seems to have deep roots — which often don’t disappear even in the face of success. One of Dr. Klawe’s favorite topics is what she calls The Imposter Syndrome. “Even women who get into MIT, and major in engineering,” she says, “often continue to second guess themselves, worrying that success was a mistake. So the first time they get a B on an exam, they switch to a major in the humanities.  Yet males can get all C’s and think they’re doing great. It’s just normal for males to overestimate their success and for women to worry that they don’t deserve to be where they are. That insecurity often haunts them into their professional lives.”

Because of this, and despite the fact that it is common practice, it is sort of a mistake to find the resistance of a circuit element by plotting V vs I and finding the slope. Obviously, if the circuit element is non-ohmic it doesn’t make any sense to report a single R value. However, even if the circuit element can be nicely approximated by Ohm’s Law, it actually makes more sense to report the value of R as an average of all V/I ratios than it does to calculate the resistance by determining the slope of the best fit line.  This is especially the case if your best fit-line has a non-zero y-intercept.

Just as you make sure your socks are on before your shoes, cells make sure that their chromosomes are properly aligned before they divide. However, every time a cell divides, it runs the risk of generating cells with too few or too many chromosomes. These mistakes can cause Down Syndrome and play a role in the growth of cancers. In his Science Center Lecture Series presentation, professor Andrew Murray looks at a mysterious cellular process that may provide clues to understanding chromosomal abnormalities such as the higher incidence of children with Down Syndrome born to older women.