We often become so busy living our lives that we don't bother to question strange observations. There's a reason for everything. Everything we do and everything that is out there. There's a reason why we celebrate festivals, there's a reason why men and women have their shirt buttons on opposite sides, there's a reason why we have cornflakes for breakfast and there's a reason why the flame has no shadow. Have you ever noticed that the flame has no shadow?
We were all taught in school that when things are illuminated, they create shadows. Fire can cast a shadow only when the light source behind the fire is brighter than the fire.
The main reason why the flame has no shadow is because the flame itself is a source of light.
A shadow is the surface area which is less bright than its surroundings because something is blocking light partially or fully from that area. Therefore, a shadow is nothing but a darker area with the absence of light. If the light source behind the flame is brighter than the flame, then the flame would cast a shadow. However, it's usually not possible because the fire in itself is the brightest source of light and also because the flame is transparent to some extent.
The next time you'd like to see a flame cast its shadow, try and place a source of light brighter than the flame behind it.
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