Professor Knowitall explores light with Dr Spark and Dr Bright in British Sign Language.


Ramon Woolfe


Camilla Arnold


Episode credited cast:
Sebastian Cunliffe Sebastian Cunliffe ... Dr. Bright
Erika Jones Erika Jones ... Dr. Spark
Bill Nash Bill Nash ... Professor Knowitall (voice)
Neil Phipps Neil Phipps ... Dr. Bright (voice)
Tara St Clair Tara St Clair ... Dr. Spark (voice)
Ramon Woolfe Ramon Woolfe ... Professor Knowitall


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Factual series explaining all the mysteries of the world of science in BSL! In this episode, Professor Knowitall and his sidekicks Dr Spark and Dr Bright tell us all about light. How long does it take the sun's light to travel to Earth? Which is faster, light or sound? Dr Spark once again gets in the teleporter and blows up some watermelons to give us the definitive answer! Later, she's sent to a laser pointer to show whether light rays are curved or not. Finally, Dr Knowitall explores what happens when light is filtered through different colours. Written by Bunting, Judith

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Release Date:

7 May 2012 (UK) See more »

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