Now playing · 08 Ultrasound
Axial resolution
λ = 0.3080 mm
R
a
≈
n
λ
2
=
n
c
2
f
R_a \approx \frac{n\lambda}{2} = \frac{n c}{2f}
R
a
≈
2
nλ
=
2
f
n
c
Half the spatial pulse length ≈ n λ / 2.
Laser