As often happens here at this time of year, we've had a fall of snow and it's stayed on the peaks around where we live. Each time this happens, I'm surprised by how much higher the mountains look when they have snow on them - they look like an entirely different (and considerably more impressive) range.
So, what I puzzle about every time is whether this visual effect is either knowledge-based (higher mountains have snow on them - that's how we know they're higher!) or sensation-based (bright objects appear closer (and therefore bigger)). Because of my more Gibsonian background, I'm inclined towards the latter model ... but it's a curious effect.
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