Circa is a light sculpture that represents the circannual cycle of light levels on earth’s surface in West Sussex. It is divided into twelve physical elements (circles) that each represent one month of the year. Light is the primary zeitgeber (time giver), its presence and absence is essential in regulating overt rhythms in biochemistry, physiology, and behaviour throughout an organism. The installation also makes visible the simple oscillations and feed-back loops that have been found to give plant life their internal clocks and circadian rhythm. Installed at @wakehurst_botanic_garden (@kewgardens) as part of @shrinking_space curated event, The Wonder Project. . . . #circadianrhythm #light #circa #limbiccinema #led #ledart #lightdesign #lightinstallation #circles #madmapper #madlight #repetition #layers #time #clock #nowherediary #imaginarymagnitude #thinkverylittle #cinematica #videodesign #nature #sitespecific