Complete the notes below.

Choose NO MORE THAN TWO WORDS from the passage for each answer.

Write your answers in boxes 9-13 on your answer sheet.

127 fibres = 1 bundle

2 fibres = 60 Watt bulb

A (9) measures amount of light & a (10) mixes light from different sources to keep levels constant

Higher % of natural light, more attractive and biologically advantageous—fluorescence contributes to feelings of (11) whereas natural or hybrid light gives rise to more productivity (& the sale of more (12) in shops) because it helps workers (& shoppers ) feel good and maintain biological rhythms.

Plastic fibres are cheap but length from the (13) is a limiting factor.

(9)