Participants in the vigil gathered on the second floor of the Memorial Union to remember the victims slain by accused gunman Cho Seung-Hui.
"There's absolutely an impact," said the Rev. Kristin Stoneking of the Cal Aggie Christian Association. "Campuses are close-knit communities. So, we identify with other campuses. When anything happens on our campus, there's a ripple effect and everyone feels it very personally."
The vigil was organized by several campus religious groups.
"We're hoping to offer a chance for people to express their emotions," Stoneking added.
A candlelight vigil is also planned on campus Friday night at 7 p.m.