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Optical Physics for Babies (Baby University) Board book – July 4, 2017
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However, there are *so* many glaring errors in "Optical Physics for babies" that it has really made me question buying any more of the books in this series.
A previous reviewer mentioned that the "rainbow" in the book comprises of 6 colours, not 7 - but this is only the tip of the iceberg.
From about halfway through, there are big inaccuracies in the diagrams, to the extent that I'm considering using it as a "spot-the-mistake" exercise with my pupils (not Key Stage 4 or Key Stage 5, but 12 year olds in Key Stage 3).
For example, when refraction is discussed the light exiting the block remains split into a spectrum. This should not be the case if the surface through which the ray has entered is *parallel* to that at which it exits - it should reform into white light.
Prior to this, at a more fundemental level, when the light ray enters the block and refracts, it bends back on itself by a huge angle, past the normal; the ray should bend downwards, but only very slightly. You may think that this is trivial, but had the author just adjusted the illustration slightly to increase the angle of incidence, it would have been easy to draw correctly.
Similar issues exist for the raindrop diagram: the angle of refraction as the ray enters the drop is greater than the angle of incidence, suggesting that the ray travels faster in water. This is simply not the case - the opposite is true (light travels more slowly in water).
There are other oversights that may have been omitted for clarity, but I can see absolutely no reason to include the errors I have mentioned. Drawing the diagrams differently would have had no impact, other than making the book correct.
(Please don't let this stop you from buying some of the other books!)
Parte de un principio de comparativa a una pelota ("This is a Ball") y en las páginas del libro va describiendo de manera explícita y sencilla la composición de la luz, como se separa y concluye con los arcoiris.
No es que el bebé termine siendo un físico o quede sin dudas sobre la materia, pero es una excelente herramienta para que desde pequeños comiencen a manejar conceptos que les facilitará el entendimiento del tema en el futuro.
Spero di vedere presto dal vivo un arcobaleno doppio!
Plus I learned how double rainbows work!