Page:Eleanor Gamble - The Applicability of Weber's Law to Smell.pdf/63

Table VII.

Results of the Modified Form of the Method of Just Noticeable Differences.

SUBJECT.	SUBSTANCE	METHOD AND Standard	NOSTRIL	No. values Averaged.	Δro'	Δro''	Δru''	Δru'	Δro	Δru	Δr	Δr⁄r
D.	Gray rubber,	{C. M.r=19}	R.	4	9	8	6	10	9	8	8+1⁄2	2
			L.		11	8	3	7	10	5	7+1⁄2	3
		{C. M.r=39}	R.	4	18	9	3	11	14	7	10+1⁄2	4
			L.		18	9	4	8	14	7	10	4
		{J N Dr=19}	R.	4					2	6	4	5
			L.						7	6	6+1⁄2	3
		{J N Dr=39}	R.	4					12	10	11	4
			L.						9	10	9+1⁄2	4
K.	Rosewood,	{C. M.r=22}	R.	3	15	5	2	11	10	7	8+1⁄2	3
			L.		11	6	3	16	9	10	9+1⁄2	2
		{C. M.r=42}	R.	4	14	4	5	8	9	7	8	5
			L.		12	6	9	14	9	12	10+1⁄2	4
		{C. M.r=22}	R.	2	10	5	7	10	8	9	8+1⁄2	3
			L.		8	7	8	4	8	6	7	3
		{C. M.r=42}	R.	2	10	6	3	9	8	6	7	6
			L.		11	6	4	10	9	7	8	5
		{J N Dr=22}	R.						9	9	9	3
			L.						13	15	14	A
		{J N Dr=42}	R.						8	16	12	4
			L.						7	14	10+1⁄2	4

Table VIII.

Results obtained for Red Rubber by the True Method of Minimal Changes.

SUBJECT—SH.

r=20 mm.Gradation=2 mm. Δ+A⁄r=40 mm.Δ+V⁄r=4 mm.
r1 given before r.				r given before r1.
	Δro'	Δro''	Δro	Δro'	Δro''	Δro
R.N.	6	6	6	12	6	9
L.N.	6	10	8	6	8	7
	Δru'	Δru''	Δru	Δru'	Δru''	Δru
R.N.	12	6	9	6	12	9
L.N.	8	4	6	8	12	10
	Δr	Δr⁄r		Δr	Δr⁄r
R.N.	7+1⁄2	15⁄10=1⁄3+		9	18⁄40=1⁄2−
L.N.	7	14⁄40=1⁄5+		8+1⁄2	17⁄40=1⁄3+
Final result: R.N. Δr=8+1⁄4 mm. Δr⁄r=33⁄80=1⁄3+ L.N. Δr=7+3⁄4 mm. Δr⁄r=31⁄80=1⁄3+