Christmas tree model

Christmas tree model

[′kris·məs ‚trē ‚mäd·əl]
(astronomy)
An explanation of superluminal motion wherein randomly flashing lights represent the superluminal features.
References in periodicals archive ?
The winners on the day were Ysgol Pont y Gof in Botwnnog on the Llyn Peninsula in north Wales, who were awarded the top prize for their business idea which involved reusing old wooden pallets to make decorative Christmas tree models.
Ysgol Pont y Gof, Botwnnog, won the top prize for their business idea which involved reusing old wooden pallets to make decorative Christmas tree models
Ysgol Pont y Gof, from Botwnnog on the Llyn Peninsula, were awarded the top prize for their business idea which involved reusing old wooden pallets to make decorative Christmas tree models.