To test the claim that full-spectrum lighting increases restaurant sales, researchers at Cornell University's Center for Hospitality Research changed the lamps in the main hall of a popular casual dining restaurant. Although factors such as acceptance or rejection by diners and duration of meals did not vary, the influx of customers in the control room, where the lighting was not changed, increased during the test. This, the study authors note, indicates that there are other factors at play besides lighting, for which reason they recommend conducting additional experiments to test the effect of full-spectrum lighting. Full spectrum lights do not ignite sales
To test the claim that full-spectrum lighting increases restaurant sales, researchers at Cornell University's Center for Hospitality Research changed the lamps in the main hall of a popular casual dining restaurant. Although factors such as acceptance or rejection by diners and duration of meals did not vary, the influx of customers in the control room, where the lighting was not changed, increased during the test. This, the study authors note, indicates that there are other factors at play besides lighting, for which reason they recommend conducting additional experiments to test the effect of full-spectrum lighting. 
