Videos are able to be viewed through the ceiling projectors.

During the hours of darkness, the ceiling projector shall be used at each observation.

At night when it is not practical to use a balloon the ceiling projector is used.

Vertical visibility, however, is very difficult to estimate even with the aid of balloons or a ceiling projector.

The ceiling projector that duplicated the outside night flashed dots of light across his short face, his long, flat belly.

It features an LCD screen, a ceiling projector and a fitted screen.

In addition, a "master terminal" and a ceiling projector provide presenters with the option of adding and presenting their own content.

The ceiling projector or cloud searchlight is used to measure the height of the base of clouds (called the ceiling) above the ground.

However, during twilight it may be impossible to use the ceiling projector and then a pibal (pilot balloon) light may be used.

Herma Houdini is an ABOVE ceiling projector mount solution.

The Ceiling Projector and Ceiling Balloon equipment shall be used as standby or supplementary equipment at these stations.

C0290 Ceiling projector Cloud searchlight Projector designed to produce, at night, an illuminated spot on the base of a cloud layer in order to measure its height.

The ceiling projectors were invisible; it took fantastic kinaesthetic sensibility to dance one chorus of a simple tune without straying off key, and more still to come back and repeat it.

The height of the base of a layer aloft is determined by use of a ceiling projector or ceilometer, and the projector spot or ceilometer reaction is sharply defined. b.

Under actual and simulated conditions, given a ceiling projector system, the student will determine the height or vertical visibility of the layers present as prescribed in MANOBS Chapters 1 and 10.

When the classification "Aircraft" is not appropriate, either "Indefinite" or "Precipitation" shall be the classification regardless of the aids e.g., balloons, ceiling projector etc. which may have been used in estimating the vertical visibility.

At night human observers can also make use of a light emitting rotating Ceiling Projector Beam and/or a Ceilometer Recorder Record as aids in estimating both the amount and height of lower cloud bases.

As a result of the findings, the floodlights near the ceiling projector were adjusted to reduce interference with weather observations, and NAV CANADA implemented new procedures to improve the communication of information related to changing weather conditions between the weather office and the tower personnel.