Skip Menu. Navigate to content in this page
Accessibility Assistance, opens A D A page

Concentrating sunlight, 17th century

Item # 1140095

Concentrating sunlight. Illustration showing various methods of concentrating sunlight in order to ignite some material. The main illustration depicts a lens mounted on a castle turret being used to focus sunlight onto an attacking enemy ship. At the top is a diagram showing parallel light beams being focused by a mirror. In the centre are ray diagrams of a parabolic mirror (left), spherical mirror (right) and the two foci of an ellipse (centre). At the bottom right a light source at the focus of a parabolic mirror is used to project a parallel light beam. This illustration is taken from Kircher's Ars magna lucis et umbrae printed at Rome in 1646. .

Elevate any room with our handcrafted Stretched Canvas Wraps. Printed with archival inks and wrapped around a full hardwood frame, your favorite art will have a timeless, traditional look that fits in with any decor.

Closeup of the back and corner of a stretched canvas art print
Professional Quality, Crafted by Hand
Art gallery style is within your reach with our classic Stretched Canvas Prints. Built to last with precision around a wood frame, each canvas wrap is hand-stapled with care, so they stay firm with tight, clean corners for years to come – all constructed in Raleigh, North Carolina.
Individual pieces of hanging hardware
Hang Your Art in Minutes
Create a powerful display on your wall fast and easy with our patented hanging kit - included with every Stretched Canvas Print at no extra cost. Stick your mini level on the top of your canvas print, lock the wall anchors into the pre-installed mounts, push and voila, you’ve got nail marks for a perfectly centered art piece, every time.
Closeup of stretched canvas art print showing off neatly wrapped corners
Jaw Dropping Colors
Your next classic or abstract art print will look as real as the original with spot-on color reproduction. Our archival inks prevent fading to preserve as much fine detail as possible over time. And, our artist grade cotton/polyester canvas material is free of chemicals that can be harmful to the environment like optical brightener additives.
Back of stretched canvas art print showing optional premium dust cover
Fully Finished Art Prints
Keep your Canvas Print natural with an open back or opt in for a Premium Dustcover option, recommended for displays in high traffic areas or commercial spaces. No matter what style you pick, our craftsmen treat each Stretched Canvas Print like their own, using industry-leading printing techniques and decades of experience, so your art is sure to look its best.
Science Solar Power Physics Illustrations