Foundations of Physical Science III: Optics and the Nature of Light – Summer 2026

Price

$499.00

Duration

8 weeks

Access Opens

July 22, 2026

First Live Session

August 5, 2026

Live Class Time

Wednesdays, 10 am-12 pm PT

Light and the faculty of vision have been subjects of considerable interest from antiquity on. This course will trace the development of the science of optics and the growth in our understanding of the nature of light from the first, groping ideas of the Ancient Greeks up through the work of Kepler, Descartes, Newton, Huygens, Young, Fresnel and others.

We will proceed hierarchically, and our focus will be on understanding how our ideas about the physical nature, properties and behavior of light were built up step by step, with each new development growing out of the context set by previous discoveries and grounded at every stage in perceptual observation.

Note: There have been a few updates to “Access Opens” and “First Live Session” dates for this course since its initial listing.

Start Dates

Choose the semester that fits your schedule at checkout.

Syllabus

Week 1: The philosophy of work and philosophy at work

Week 2: Choosing a career path 1

Week 3: Choosing a career path 2

Week 4: Career skills 1

Week 5: Career skills 2

Week 6: Developing a career vision and strategy 1

Week 7: Developing a career vision and strategy 2

Week 8: Final thoughts and open Q&A

How it Works

Attend Weekly Live Classes

Join live online classes and participate in the discussion.

Recordings Provided

Can’t join the live class? Watch all classes anywhere, anytime.

Submit Assignments (Optional)

Be a graded student and submit assignments for feedback from expert faculty—or audit and simply enjoy the content and discussions for personal enrichment.

Coaching Support

All courses include access to top-notch coaches, who help you set goals, stay on track, and apply what you’re learning to career or intellectual pursuits.

What Students Say About ARI Live Courses

Your Instructors

Classes taught by

Keith Lockitch

Keith Lockitch

Dr. Lockitch is ARI vice president of education and a senior fellow. Dr. Lockitch trains students in how to communicate philosophic ideas and uses his background as a physicist to apply Ayn Rand’s ideas to crucial issues in science and technology. Dr. Lockitch received his PhD in physics from the University of Wisconsin, Milwaukee, and has conducted postdoctoral research in relativistic astrophysics.

ARI reserves the right to cancel or reschedule live courses. Students have the option to be refunded, credited, or transferred to another course should this occur.

The decision to be a graded student or auditor must be made at the outset of a course, via the pre-course survey sent after purchase.

ARI Live Courses are for avocational and professional development purposes. They are not licensed and not accredited.

ARI Live Courses participants must abide by our Code of Conduct and Confidentiality policies, and any other course policies communicated to participants.

What's Included

Prerequisites​

This course is the third in a series of courses on the hierarchical growth of science, but the previous courses, while recommended, are not required prerequisites. A basic knowledge of high school mathematics is strongly recommended. Also, some optional topics in the course will presuppose an exposure to elementary calculus.

Course Details

The course start date reflects the date of the first live class. Some courses may include assignments due before the start of the class.

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