diffraction - 2024 ACF Fall

Question

In classical physics, this phenomenon is explained using Huygens’ principle. For 10 points each:

[10e] Name this phenomenon which occurs when light passes through a namesake grating. Light can bend around corners when undergoing this phenomenon, which caused an interference pattern in Young’s double slit experiment.

ANSWER: diffraction [accept diffraction grating]

[10m] This law governs the diffraction of x-rays in a crystal. It states that diffraction order times wavelength equals two times the grating constant times sine of theta.

ANSWER: Bragg’s Law

[10h] The results of this experiment agreed with the prediction of Bragg’s Law. Electrons diffracted off a nickel crystal in this experiment, which provided evidence for wave-particle duality.

ANSWER: Davisson-Germer experiment

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Summary


2024 ACF Fall at Cornell	fall	Y	9	12.22	78%	22%	22%
2024 ACF Fall at Ohio State	fall	Y	9	8.89	67%	11%	11%
2024 ACF Fall at Washington	fall	Y	7	10.00	86%	14%	0%
2024 ACF Fall at Georgia	fall	Y	13	6.92	46%	8%	15%
2024 ACF Fall at North Carolina	fall	Y	9	6.67	56%	11%	0%
2024 ACF Fall at Claremont Colleges	fall	Y	1	10.00	100%	0%	0%
2024 ACF Fall at Rutgers	fall	Y	7	8.57	71%	14%	0%
2024 ACF Fall at Illinois	fall	Y	9	14.44	89%	44%	11%

Data


Cornell A	U of Rochester A	10	0	0	10
Cornell B	Cornell F	10	0	0	10
Cornell C	Syracuse	10	10	10	30
Cornell D	Binghamton A	10	10	10	30
RIT C	Cornell G	0	0	0	0
Penn State	ESF	10	0	0	10
RIT A	Binghamton C	10	0	0	10
Cornell E	RIT B	10	0	0	10
U of Rochester B	Binghamton B	0	0	0	0
CWRU B (DII)	CWRU A (UG)	0	0	0	0
Miami A (UG)	Michigan C	10	0	0	10
Miami C (DII)	CWRU C (UG)	0	0	0	0
Michigan A (UG)	Ohio State B (DII)	10	10	0	20
Jefferson County Scholars (DII)	Michigan B (UG)	10	0	0	10
Michigan D (UG)	Michigan State A	10	0	10	20
Ohio State C (DII)	Michigan State B	10	0	0	10
Ohio State A (UG)	Miami B (UG)	10	0	0	10
West Virginia A (UG)	West Virginia B (UG)	0	0	0	0
Alberta	Arizona State A	10	0	0	10
UW Wrath	UBC B	10	0	0	10
Arizona State B	UW Chastity	0	0	0	0
UBC A	UW Greed	10	0	0	10
Boise State	UW Lust	10	10	0	20
UW Pride	UW Gluttony	10	0	0	10
UW Sloth	UW Envy	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Alabama A	Georgia Tech C	10	0	0	10
Furman	Clemson B	0	0	0	0
Georgia A	Auburn B	0	0	0	0
Georgia Tech A	Tennessee A	10	10	10	30
Vanderbilt A	Georgia Tech B	0	0	0	0
Georgia Tech D	Auburn A	10	0	10	20
South Carolina A	Georgia Tech E	0	0	0	0
Emory Oxford	South Carolina B	10	0	0	10
Clemson A	Southern	0	0	0	0
Tennessee B	Auburn C	0	0	0	0
Belmont	Vanderbilt B	0	0	0	0
Virginia	Appalachian State B	10	0	0	10
Liberty B	Duke B	0	0	0	0
James Madison A	UNC D	0	0	0	0
UNC A	NC State	10	0	0	10
Liberty A	UNC B	10	10	0	20
Liberty C	VCU	0	0	0	0
Virginia Tech A	Duke A	10	0	0	10
UNC C	Virginia Tech B	0	0	0	0
Tusculum	William & Mary	10	0	0	10
Claremont A	UCLA C	10	0	0	10
Bard A (UG)	Princeton A (UG)	0	0	0	0
Penn A (DII)	Columbia J (DII)	10	0	0	10
Fordham A	Columbia B	0	0	0	0
Columbia A (UG)	NYU A (UG)	10	10	0	20
NYU B	Rutgers B	10	0	0	10
Rowan A (DII)	Maryland B (DII)	10	0	0	10
Maryland A (DII)	Rutgers A (UG)	10	0	0	10
Purdue A	Chicago A	10	10	10	30
Notre Dame A	Chicago B	10	10	0	20
Notre Dame C	Illinois A	10	0	0	10
Iowa A	Illinois C	10	10	0	20
Indiana	Northwestern A	10	0	0	10
Notre Dame B	Purdue C	10	0	0	10
SIUE	Northwestern B	0	0	0	0
Illinois D	WashU A	10	0	0	10
Illinois B	Iowa B	10	10	0	20