Heat Signature, 2018

Live video Feed, FLIR FCR thermal camera, industrial heaters, audio video cables, drop ceiling, mics, PC computer

Heat Signature is a second chapter of Tali Keren’s research into Judeo-Christian ideology. Juxtaposing a design for the Great Seal of the United States unsuccessfully proposed to Congress by Thomas Jefferson and Benjamin Franklin in 1776 with a FLIR thermal camera, Keren underscores the often invisible inherent relations between American national myths, technocratic beliefs, and quest for power and control.

The recreation and manipulation of Jefferson and Franklin’s rejected design—which depicts the biblical story of the Israelites’ exodus from Egypt, with America serving as the ‘New Zion’—through a heat-based performative sculpture, allows Keren to explore the effects of thermal surveillance methods on bodies and mediascapes. These conjured imageries lie at the heart of the exhibition. Jefferson and Franklin’s phantasmic vision is brought to life with an infrared camera and electric heaters. Temperature shifts translate into focus shifts in the monochromatic live video feed, as the heaters turn on and off and the image of the Seal, which is embedded in the ceiling—unseen to the eye—heats and cools. Yet, it is in the constant appearance and disappearance of the projected image, in the tension between the visible and the invisible, that the viewer is asked to ponder the relation between militarized media perception and the meaning of ‘temperature seeing’—even as their own body heat is registered by the thermal camera. In Heat Signature, Keren turns the FC-R camera, designed to make human body heat visible, away from the viewers, whose collective temperature alters the background hue of the live-projected image of the Seal.

Testimonies presented as both video transcripts and audio recording reflect oמ temperature-based visuality. Attorney Kenneth Lerner discusses the Fourth Amendment and thermal technology’s invation of privacy. Brandon Bryant, who served in the US Air Force, shares his daunting military experience using infrared cameras and describes humans transforming into targets between infrared’s black-hot and white-hot polarities. MIT media scholar Lisa Parks considers how temperature-based optics affect conceptions of racial and ethnic difference and perceptions of violence under the gaze of military surveillance. 

Projected image revealed at a temprature of 131.8 f 

Projected image revealed at a temprature of  99.2 f

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