• Orange County Science and Engineering Fair
    • Orange County Science and Engineering Fair
    • Orange County Science and Engineering Fair
    • Orange County Science and Engineering Fair
    • Orange County Science and Engineering Fair

News & Events

OCSEF Ask-a-Scientist Nights
OCSEF Ask-a-Scientist Nights

OCSEF, OC Science, and THINK Together hosted four successful Ask-a-Scientist Nights in school across Orange County.

2016 Excellence in STEM Award Ceremony
2016 Excellence in STEM Award Ceremony

At the 2016 annual Excellence in STEM Awards ceremony, teachers, volunteers, board members, judges, and special judges received awards for their excellence.

Jan and Richard Cannon 1964
Jan and Richard Cannon 1964

Jan and Richard Cannon met at OCSEF in 1964 as fellow competitors. Little did they know that they would end up happily married in the years to follow. 

  • The Orange County Science and Engineering Fair (OCSEF) is a nonprofit educational organization that has promoted science and engineering in Orange County since 1955. The educators, scientists, and engineers who volunteer their services are committed to educating, guiding, and motivating students to engage in project-based learning in all fields of science, technology, engineering, and mathematics (STEM) to be college and career ready in the 21st century. 

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2018 OCSEF Information
2018 OCSEF Information

Thinking of participating in the 2018 Orange County Science and Engineering Fair? Register or find out more information here!

Free Science Fair Resources
Free Science Fair Resources

Advice for conducting a science fair project, information for various science summer camps, links to science fair competitions, and more!

2015 OC Fair Imaginology
2015 OC Fair Imaginology

The OC Imaginology Fair is a great opportunity to showcase your talents in individual and group project competitions in a variety of subjects including Science, Technology, Engineering, Arts and Math!

2016 Broadcom MASTERS Semifinalists
2016 Broadcom MASTERS Semifinalists

Of the 300 students chosen as Broadcom MASTERS semifinalists from across the nation, nine elementary and middle school students from OCSEF qualified. 

2016 California State Science Fair Winners
2016 California State Science Fair Winners

A total of 32 Orange County students from grades 6-12 won awards at the 65th annual California State Science Fair held on May 23-24.

2016 Intel ISEF Finalists Selected
2016 Intel ISEF Finalists Selected

Four high school students were selected to represent Orange County at the 2016 Intel International Science & Engineering Fair.

Jiwon Chae was an 8th grader at Rancho San Joaquin Middle School in the 2015-2016 school year. He placed third in the Junior Division in the category of Energy Conversion, and his project title is “The Effect of Varying Pitch on Voltage Generated by Vertical Axis Wind Turbines.” In this project, Jiwon investigated the different pitches of blades that generated the most voltage with three wind speeds. Considering the global energy issue at hand, a method to produce efficient alternative energy could be a valuable tool to people everywhere.

 

The purpose of Jiwon’s project was to determine the pitch of the blade that generated the most voltage within three different wind speeds. He hypothesized that because of smoother air flow created by the design, the Savonius (drag) type blade pitched at thirty degrees would produce the greatest amount of voltage. The wind turbine generated power via a magneto, a generator that utilizes the fact that a magnetic field can interact with an electric circuit in order to create voltage. Three separate blade frames pitched at different angles served as the independent variables of his experiment. After three trials of testing at three different wind speeds, it was proven that his hypothesis was correct; the frame pitched at thirty degrees did consistently provide greater amounts of voltage.

 

Jiwon learned many things throughout his project, and has much advice to give to student researchers. “Do not be afraid to put forward and project” and “start early in order to avoid the race against time” that he had faced during the latter half of his project. If you ever get stuck, “do not hesitate to get help from teachers and even scientists.” “When seeking help from those who are more knowledgeable than you, be sure to put in the research that help your mentors make sense of your work.”

 

Outside of science fair, Jiwon enjoys reading books, particularly science fiction and alternative history. he plays the alto saxophone, and takes pleasure in hiking at various National Parks that he visits. He also loves assembling and painting plastic scale model kits because or the sense of history it provides.

 

 

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