Question

「路學參

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20. Humans can distinguish up to 18,400,000
individual dots called pixels on a typical
computer display. Can a human distinguish
pixels on a same-sized HDTV with
2 x 106 pixels? Explain.

Answer 1

The answer is yes, because 2 × 10⁶ < 18,400,000, human can distinguish pixels on a same-sized HDTV.

Explanation:

Step 1:

2⋅10⋅10⋅10⋅10⋅10⋅10 = 20⋅10⋅10⋅10⋅10⋅10 = 200⋅10⋅10⋅10⋅10 = 2,000⋅10⋅10⋅10 = 20,000⋅10⋅10 = 200,000⋅10 = 2,000,000

​Step 2:

Because 2 × 10⁶ < 18,400,000, human can distinguish pixels on a same-sized HDTV.