Figure S2 shows the energy balance of a typical low pressure sodium lamp, which reveals that in fact only about 30% of the input power is converted into visible light. This percentage is comparable with other modern discharge lamps.
Causes of Enlarged Heart (Dilated Cardiomyopathy) in Dogs An enlarged heart is an acquired condition; the specific cause is presently unknown. Factors that are thought to contribute are as follows.
Emotions also play a role in the size of the pupils, when a cat is angry or aggravated the pupils constrict, when it is happy or frightened, they dilate. Pupils should be equal in size and when looked at with a bright light, they should both constrict quickly.ilated pupils can also be a symptom of an underlying problem. One or both pupils may be affected, when only one pupil is affected, the condition is known as anisocoria. Some conditions which can cause the pupils to remain dilated include: Feline dysatonomia (feline dilated pupil syndrome).