Call for abstracts:

            The 2019 Light and Color organizing committee seeks abstracts of original, innovative, and previously unpublished research on the topics listed above on the Light & Color homepage.   Each accepted abstract will be the basis for a 20-minute talk given by its author(s), followed by 5 minutes of questions; there will be no poster session.


            As for previous Light and Color in Nature conferences, the committee will make only this one call for abstracts, followed by scientific review of same.  All submitted abstracts will be peer-reviewed by 2 referees from the organizing committee.  All abstracts will be rated on their originality, significance, language clarity, and scientific soundness.


            To apply, please submit an English-language abstract as an E-mail attachment to .

Each abstract must:

be limited to 500 words or fewer,

fit on at most  2  U. S. letter-size or A4-size pages,

use font sizes of 12 points or larger,

be in PDF, doc, or docx file format,

contain at most  2  color images or technical figures,

list the proposed talk’s title and author(s),

list the corresponding author’s E-mail address and any institutional affiliation(s).


            The deadline for submitting abstracts is 15 May 2019.  The committee will review each abstract and notify author(s) of its decision by 25 May 2019.  Individual authors or groups may submit more than one proposal, but conference time constraints may limit the number that can be accepted per author or group.



Abstract submission deadline:  15 May 2019

Notice to authors:  25 May 2019

Early registration deadline:  1 June 2019

Conference dates:  15–18 July 2019


Organizing committee:

Raymond Lee (conference chair):  U. S. Naval Academy, USA

Joseph Shaw:  Montana State University, USA

Charles Adler:  Saint Mary’s College of Maryland, USA

Stanley D. Gedzelman:  (emeritus) City College of New York, USA

Robert Greenler:  (emeritus) University of Wisconsin – Milwaukee, USA

Javier Hernández-Andrés:  University of Granada, Spain

Philip Laven:  United Kingdom

David Lynch:  Thule Scientific, USA

Michael Vollmer:  University of Applied Sciences in Brandenburg, Germany



Past Light and Color conferences:

(12)  Light and Color in Nature, University of Granada – Spain, 2016 (Javier Hernández-Andrés)

(11)  Light and Color in Nature, University of Alaska – Fairbanks, 2013 (Kenneth Sassen)

(10)  Light and Color in Nature, St. Mary’s College of Maryland, St. Mary’s City, 2010 (Charles Adler)

 (9)  Light and Color in Nature, Montana State University, Bozeman, 2007 (Joseph Shaw)

 (8)  Atmospheric Optics, Physikzentrum, Bad Honnef, Germany, 2004 (Michael Vollmer)

 (7)  Meteorological Optics, National Center for Atmospheric Research, Boulder, Colorado, 2001 (Stanley Gedzelman)

 (6)  Light and Color in the Open Air, Santa Fe, New Mexico, 1997 (Kenneth Sassen)

 (5)  Light and Color in the Open Air, Pennsylvania State University, University Park, Pennsylvania, 1993 (Craig Bohren and Alistair Fraser)

 (4)  Light and Color in the Open Air, Washington, D.C., 1990 (Robert Greenler)

 (3)  Meteorological Optics, Honolulu, Hawaii, 1986 (David Lynch)

 (2)  Atmospheric Optics, Incline Village, Nevada, 1983 (William Mach and Alistair Fraser)

 (1)  Meteorological Optics, Keystone, Colorado, 1978 (David Lynch)




            For several decades, the Optical Society of America (OSA) has published a feature issue in one of its peer-reviewed journals (e.g., Applied Optics) that includes expanded versions of some Light and Color conference talks.  We will continue this tradition by asking OSA after the 2019 conference to issue a call for papers on the topics listed on the Light & Color homepage, and we expect that accepted papers will be published in 2020.


            Below is a list of OSA feature issues that include Light and Color papers.  Philip Laven’s website includes a page with links to many of these feature-issue papers.

Applied Optics, v. 56(19), pp. LC1–LC2, G1–G204 (1 July 2017)

Applied Optics, v. 54(4), pp. LC1–LC2, B1–B265 (1 February 2015)

Applied Optics, v. 50(28), pp. LC1-LC2, F1–F171 (1 October 2011)

Applied Optics, v. 47(34), pp. H1–H224 (1 December 2008)

Applied Optics, v. 44(27), pp. 5623–5762 (20 September 2005)

Applied Optics, v. 42(3), pp. 307–525 (20 Jan. 2003)

Applied Optics, v. 37(9), pp. 1425–1588 (20 March 1998)

Applied Optics, v. 33(21), pp. 4535–4760 (20 July 1994)

Applied Optics, v. 30(24), pp. 3381–3552 (20 August 1991)

Journal of the Optical Society of America, v. 73(12), pp. 1622–1664 (1 December 1983)

Journal of the Optical Society of America, v. 69(8), pp. 1051–1198 (1 August 1979)

Journal of the Optical Society of America A, v. 4(3), pp. 558–620 (1 March 1987)


Preliminary agenda:

N.B.:  “EDT” = Eastern Daylight Time = UTC – 0400; “COA” = College of the Atlantic;
“NPS” = U. S. National Park Service; “PP Show” = Pretty Picture session

time (EDT)

Monday, 15 July 2019


time (EDT)

Tuesday, 16 July 2019


intro:  COA, Lee, and Shaw



Talk 3a:  Biological/environmental optics


Michael Berry invited talk



Talk 3b:  Biological/env. optics


coffee break



Talk 3c:  Biological/env. optics


Talk 1a:  Ice-crystal optics



coffee break


Talk 1b:  Ice-crystal optics



Talk 3d:  Biological/env. optics


Talk 1c:  Ice-crystal optics



Talk 3e:  Biological/env. optics


Lunch at COA



Talk 3f:  Biological/env. optics


Talk 1d:  Ice-crystal optics



Lunch at COA


Talk 1e:  Ice-crystal optics



Talk 4a:  Water-drop optics


Talk 1f:  Ice-crystal optics



Talk 4b:  Water-drop optics


coffee break



Talk 4c:  Water-drop optics


Talk 2a:  Cloud optics



coffee break


Talk 2b:  Cloud optics



Talk 4d:  Water-drop optics


Talk 2c:  Cloud optics



Talk 4e:  Water-drop optics


Talk 2d:  Cloud optics



Talk 4f:  Water-drop optics


Talk 2e:  Cloud optics



Public talk (via NPS?)


Reception at COA



Dinner at COA


Dinner at COA





sunset from Cadillac Mountain (~2014 EDT)  or  PP Show*



sunset from Cadillac Mountain (~2014 EDT)  or  PP Show*

*The date for our twilight observations from Cadillac Mountain’s summit will depend on which evening has clearer skies;
the public Pretty Picture session will occur on the other date.


time (EDT)

Wednesday, 17 July 2019


Thursday, 18 July 2019


John Adam invited talk


no conference sessions:  see


coffee break


“Excursions for all” below


Talk 5a:  Clear-sky optics




Talk 5b:  Clear-sky optics


Friday, 19 July 2019


Talk 5c:  Clear-sky optics


conference ends on Thursday;


Lunch at COA


Friday is an open day in Bar Harbor


Talk 5d:  Clear-sky optics




Talk 5e:  Clear-sky optics




Talk 5f:  Clear-sky optics




coffee break




Talk 6a:  Scattering phenomena




Talk 6b:  Scattering phenomena




Talk 6c:  Scattering phenomena




Talk 6d:  Scattering phenomena




Talk 6e:  Scattering phenomena




Talk 6f:  Scattering phenomena




Dinner at COA




(open evening)




As of 1 July 2019, the conference’s published agenda is located at this link.

Social program:

(1) Optional weekday activities for friends and families
  In addition to Thursday’s excursion for all (item 2 below), we are planning daytrips throughout the week for conference attendees’ friends and families.

(2) Excursions for all:  near Bar Harbor, including Acadia National Park

For both (1) and (2), this link gives detailed plans about destinations, activities, and prices.

time (EDT)

Thursday, 18 July 2019



schooner Margaret Todd sail with NPS ranger ($37 USD/person)


get box lunch for bus tour or eat downtown



Acadia National Park bus tour
($30 USD/person)





group dinner at Bar Harbor Inn on waterfront ($75 USD/person)




(3) Excursion for all:  tidal bores in the Bay of Fundy (Canada)

  In the few days following the full moon (16 July 2019 at 2138 UTC) and starting after the Light and Color Conference (18 July), some meeting participants tentatively plan to drive to the Moncton area of New Brunswick, Canada to see tidal bores.  This is not an organized activity and at this point each person will be making their own travel arrangements.  However:

if enough people are interested in a trip to see tidal bores, and

if someone wants to organize a group trip,

then please let David Lynch know (see contact info below).  Lynch will collect names and E-mail addresses and then put you in touch with one another.  Because this trip is self-organized, for now Lynch has no information about costs, travel routes, lodging, border crossings, etc.


Registration fees:


before 1 June

after 1 June

regular fee

$205 USD (~ 180 euros*)

$270 USD (~ 237 euros)

student fee

$100 USD (~ 88 euros)

$165 USD (~ 145 euros)

*(USD-euro conversion as of 8 December 2018)


Each person’s fee includes:

All conference talks and Pretty Picture session

Collected abstracts in PDF form

Coffee/snack breaks during sessions (15–17 July 2019)

Monday afternoon reception (15 July 2019)

Call or E-mail Diane Harn at Montana State University (1-406-994-6279  or ) to:
    (a) register for the Light and Color conference,
    (b) book optional COA week-long meal and/or lodging plans, or
    (c) selectively book from among several optional activities during the week (see Social program items (1) and (2) above).

How to register and book on-campus meals and lodging:

   The College of the Atlantic (COA), has reserved a total of 36 beds for the Light and Color conference at its Kathryn Davis Village
in the Dority, Hamill, Eno, and Miliken residence houses (see # 15 on the COA campus map).  The per-person room and meal prices at COA are:

room type

room price


meal option

meal price




resident meal plan (breakfast, lunch, & dinner)

included in room price

shared double



commuter meal plan (breakfast, lunch, & dinner)


double for 1 person



commuter lunch (entire week)





commuter lunch (one day)





commuter breakfast (one day)





commuter dinner (one day)


The term “commuter” simply means that you are not staying on campus.  Some other notes on COA lodging and meals:

as at most colleges, COA dormitory rooms provide clean but basic lodging,

linens provided by COA are:  mattress pad, pillow, blanket, pillowcase, sheets, towels, and washcloths,

all Kathryn Davis Village rooms share common bathrooms (i.e., no in-room private bathrooms),

these dormitory bathrooms have composting toilets, not conventional water-flush toilets,

a lost or damaged room key will incur a $25 charge,

all on-campus meals are served cafeteria-style in Blair Dining Hall (# 4 on campus map, adjacent to our Thomas Gates Center auditorium),

breakfast is from 0730–0830, lunch is from 1200–1300, and dinner is from 1730–1830 (5:30–6:30 PM),

each room type includes the resident meal plan at no extra charge,

if not staying on campus, you can sign up for one of the week-long commuter meal plans (see Montana State contact information below),

anyone can buy individual meals on-the-spot at Blair Dining Hall with cash at the prices listed above (no advance meal tickets are needed),

service animals are permitted in COA buildings,

smoking is prohibited in and immediately around all COA buildings.

Call or E-mail Diane Harn at Montana State University (1-406-994-6279  or ) to:
    (a) register for the Light and Color conference,
    (b) book optional COA week-long meal and/or lodging plans, or
    (c) selectively book from among several optional activities during the week (see Social program items (1) and (2) above).

Off-campus lodging (Google Maps)

N.B.:   The hotels and motels shown on the linked map and listed below are conveniently located and have had good reviews,
but we list them merely for reference and not as a recommendation.
most important:   Book now! Although Bar Harbor has many hotels and motels, nearly all of these rooms are reserved many months before July.
The longer you wait, the less likely you are to find any lodging.

within short walking distance (~ 5-10 minutes) of COA

Acadia Inn         ~ $230/night

Atlantic Eyrie Lodge         ~ $250/night

Atlantic Oceanside ~ $270-$310/night

Bar Harbor Motel           ~ $230/night

The Bayview   ~ $350/night

Bluenose Inn            ~ $240-$350/night

Edenbrook Motel            ~ $140/night

Highbrook Motel           ~ $230/night

Holiday Inn Resort            ~ $245-$310/night


longer walking distance (~ 30 minutes), although highly rated

Bar Harbor Inn      ~ $340/night

Getting to Bar Harbor and College of the Atlantic:

by airplane

In order of increasing distance from Bar Harbor, nearby airports are:

(1) Bar Harbor/Hancock County Airport (BHB; ),

(2) Bangor Airport (BGR; ), and

(3) Portland International Jetport (PWM; ).


BHB is conveniently close, but note that it is served only by small commuter aircraft from Boston.  One route of the free Island Explorer bus travels from BHB to downtown Bar Harbor ( ; see Trenton route, # 9), where other Island Explorer bus routes go to many Bar Harbor hotels.


BGR is ~ a 1.5-hour drive from Bar Harbor and has service to major international airports such as Newark, LaGuardia (New York City), and JFK Airports. 
As an alternative to driving yourself, the Bar Harbor Shuttle ( ) offers trips from and to BGR for $50 one-way (December 2018 price); advance reservations are required.


PWM has the most international flights, but is ~ a 3-hour drive from Bar Harbor.


by car

(1) From the north or south, take U. S. Interstate I-95 to Bangor, Maine  and then

(2) exit onto I-395 east  and then

(3) exit onto US-1A east and follow it to Ellsworth, Maine  and then

(4) continue straight onto ME-3 (i.e., Maine Route 3) east and follow it to Bar Harbor on Mount Desert Island.

            Alternatively, US-1 (a completely different road from US-1A) provides a very scenic tour of coastal Maine enroute to Ellsworth, but at the cost of much more travel time.


COA campus map (PDF)

This linked PDF map is intended primarily as a guide for pedestrians, because parking for day visitors on campus is quite limited.   However, parking should be available for those lodging on campus. Note that Eden Street on this map is ME-3; our meeting hall is the Thomas Gates Center.

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  (background photograph courtesy of Brian Carothers, © 2018)