§ Mr. Sorensenasked the Home Secretary with reference to the use of luminous articles as an aid to visibility during the black-out, whether he is aware that a joint committee of the Illuminating Engineering Society and the air-raid precautions Home Office Department have prepared a specification dealing with luminous and fluorescent paints; that such pigments can be produced to give as much as 10-foot candles of light; and whether he will reconsider his attitude, and either utilise the information gathered by his own Department, or avoid the waste of public money by preventing the publication of the findings of his own joint committee regarding luminous paints?
§ Mr. MabaneIt was indicated in the specification to which the hon. Member refers that, while the uses of luminous 1209W paint for A.R.P. purposes are limited, there are a number of applications for which it may be useful, and that the purpose of the specification was to enable progress to be made in exploring these possibilities. Work on the subject is continuing, and the matter will be reviewed in the light of further results. My right hon. Friend is advised that it is not practicable in ordinary conditions of use to achieve the degree of brightness quoted by the hon. Member.