Context: Equivalently, the smallness of the Planck constant reflects the fact that everyday objects and systems are made of a large number of particles. For example, green light with a wavelength of 555 nanometres (the approximate wavelength to which human eyes are most sensitive) has a frequency of 7014540000000000000♠540 THz (7014540000000000000♠540×1012 Hz). Each photon has an energy E = hf = 6981358000000000000♠3.58×10−19 J. That is a very small amount of energy in terms of everyday experience, but everyday experience is not concerned with individual photons any more than with individual atoms or molecules. An amount of light compatible with everyday experience is the energy of one mole of photons; its energy can be computed by multiplying the photon energy by the Avogadro constant, NA ≈ 7023602200000000000♠6.022×1023 mol−1. The result is that green light of wavelength 555 nm has an energy of 7005216000000000000♠216 kJ/mol, a typical energy of everyday life.

Question: What does the smallness of the Planck constant show?
Answer: the fact that everyday objects and systems are made of a large number of particles

Question: At about what wavelength of light are human eyes most sensitive?
Answer: 555 nanometres

Question: What frequency does green light with a wavelength of 555 nanmetres have?
Answer: 7014540000000000000♠540 THz

Question: How is the energy from one mole of photos computed?
Answer: by multiplying the photon energy by the Avogadro constant

Question: How much energy does a green light of wavelength 555 nm contain?
Answer: 7005216000000000000♠216 kJ/mol

Question: What is the wavelength of light to which human eyes are most sensitive?
Answer: 555 nanometres

Question: What is the frequency of the light to which the human eye is most sensitive?
Answer: 7014540000000000000♠540 THz

Question: What is the energy of a photon?
Answer: 6981358000000000000♠3.58×10−19 J

Question: How much energy is contained in the light to which human eyes are most sensitive?
Answer: 7005216000000000000♠216 kJ/mol

Question: What are common things like furniture and stationary objects never made of?
Answer: Unanswerable

Question: Which light wavelength is the human eye no longer able to see?
Answer: Unanswerable

Question: What color of light is the human eye blind to?
Answer: Unanswerable

Question: What does the smallness of the Planck constant ignore?
Answer: Unanswerable