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#greenhouse effect

5 public questions tagged with this topic.

Infrared, Visible Light and Applications

Infrared waves contribute to Earth's warmth through which effect?

**Visible light** λ≈400-700 nm, f≈4×10¹⁴ to 7×10¹⁴ Hz, narrow part of spectrum sensitive to human eye, produced by atomic transitions, used for vision, photosynthesis, optical fibers, central frequency ≈5×10¹⁴ Hz, different colors correspond to different λ. The document explains that infrared radiation is trapped by greenhouse gases, contributing to Earth's warmth via the greenhouse effect. Using c = fλ, E₀/B₀ = c, I_d = ε₀ dΦ_E/dt, and spectrum classification λ = c/f, evaluation yields Greenhouse effect, illustrating EM wave transverse nature and Maxwell's displacement current concept.

Ref: NCERT > Physics Book > Electromagnetic Waves > Infrared, Visible Light and Applications

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Infrared, Visible Light and Applications

Why do infrared waves contribute to the greenhouse effect on Earth?

**IR effectiveness in remote sensing** because IR scattered less than visible by atmosphere, can detect heat signatures, used in satellite imaging for vegetation, moisture, military night vision, illustrating application based on thermal emission and low scattering. Infrared waves emitted by the Earth's surface are absorbed and trapped by greenhouse gases, leading to an increase in atmospheric temperature, a phenomenon known as the greenhouse effect. Using c = fλ, E₀/B₀ = c, I_d = ε₀ dΦ_E/dt, and spectrum classification λ = c/f, evaluation yields They are trapped by greenhouse gases, illustrat

Ref: NCERT > Physics Book > Electromagnetic Waves > Infrared, Visible Light and Applications

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Infrared, Visible Light and Applications

Why are infrared waves important for maintaining Earth's average temperature?

**Infrared waves** λ≈700 nm to 1 mm, f≈10¹² to 4×10¹⁴ Hz, produced by hot bodies and molecular vibrations, wavelength range as per document 700 nm-1 mm, used in remote sensing because IR penetrates haze, thermal imaging detects IR emitted by objects, remote controls, effective for sensing temperature. The document explains that infrared radiation is trapped by greenhouse gases, contributing to the greenhouse effect, which helps maintain Earth's average temperature. Using c = fλ, E₀/B₀ = c, I_d = ε₀ dΦ_E/dt, and spectrum classification λ = c/f, evaluation yields They contribute to the greenhous

Ref: NCERT > Physics Book > Electromagnetic Waves > Infrared, Visible Light and Applications

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