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UWO Graphic arts students present their final self directed projects for critique in the art department in the Arts and Communications building. Tuesday, December 11, 2018.
On April 22, 14 girls and two coaches from Brazil who are a part of "Las Estrellas," a sports, leadership and English program, came to Knoxville, TN as part of the U.S. Department of State Empowering Women and Girls through Sports Initiative. After the first day, they had already experienced University culture by participating in Dr. Ashleigh Huffman's Service-Learning class and eating in the cafeteria.
So here's how it works:
> Turning the aperture ring raises the "Diaphragm Bar" behind the lens. At f/2.8 it's completely below the lens opening, and at f/22 it's just below the lens centerline.
> When the mirror rises, it drags this panel up with it; the odd shaped hole in the middle is the shutter opening. The mirror/shutter rises just as fast as its spring can whack it, and returns at the same speed as soon as it reaches the top.
> At f/2.8, the shutter is open for the entire distance of travel shown in green above - it takes about 1/60 second to cover this distance. But at f/22, with the DIaphragm Bar up where the purple line indicates, the shutter doesn't open until it reaches that line, and it closes as soon as it passes that line on the way down. The entire movement takes the same time as before, but the open time is only the time that it takes to travel the distance shown by the purple arrows. Assuming that the speed at f/2.8 was 1/60, this works out to about 1/500 second.
> The aperture at f/22 (and at all other settings except for f/2.8) is in the shape of a triangle with its point at the top - the top 2 sides are the edges of the "roof" part of the shutter opening, and the bottom side is provided by the Diaphragm bar.
It's actually just a little more complicated than this. In the above description, the f/22 opening is not centered on the same axis as the f/2.8 opening, and in fact if the Diaphragm Bar actually went as high as the purple line it would block off the center of the lens. So, in addition to all of the above, at the smaller apertures, the mirror/shutter is actually stopping its upward travel earlier than it does at full aperture. How does it do this? In the view of the Diaphragm Bar at www.flickr.com/photos/rick_oleson/53225547915/in/dateposted/, there is a second, gold colored bar that's coupled to the Diaphragm Bar, with a bent-up tab at its tip. As the Diaphragm Bar rises, this gold bar comes down - the tab at the end is the stop that the mirror strikes against to stop its upward travel. The two bars are coupled together so that the mirror's stopping position produces a centered triangular aperture opening at all settings. Dang.
Whoever did this will probably never be famous - but he was good.
UWO Graphic arts students present their final self directed projects for critique in the art department in the Arts and Communications building. Tuesday, December 11, 2018.
Stencil for the graphic representation of Computer Programs
1960s or 1970s
Scanned with Canon LIDE110
© Dirk HR Spennemann 2014, All Rights Reserved
Access all my images via the Collections Page
Helping Address Rural Vulnerabilities and Ecosystem Stability program (HARVEST) is part of President Obama’s “Feed the Future” initiative in Cambodia.
The program seeks to reduce poverty and malnutrition by diversifying and increasing food production and income for up to 100,000 rural Cambodian households.
[U.S. Embassy photo by Un Yarat]
The South Dakota School of Mines and Technology welcomed more than 200 middle school girls to campus on April 3, 2014 for Youth Program's Girls' Day event. During the event the middle school ladies had the chance to tour campus, interact with SDSMT students and professors to get a tast of the world of STEM.
British Council is interested in filling the post of Programmes Assistant and Director’s Personal Assistant.
Deadline for applications is on 24 June 2013, 10 a.m.
Click on the link below to view the requirements
www.britishcouncil.org/philippines-job-opportunities-dire...
On April 22, 14 girls and two coaches from Brazil who are a part of "Las Estrellas," a sports, leadership and English program, came to Knoxville, TN as part of the U.S. Department of State Empowering Women and Girls through Sports Initiative. After the first day, they had already experienced University culture by participating in Dr. Ashleigh Huffman's Service-Learning class and eating in the cafeteria.
It wasn't until just recently that I saw Tron Legacy and finally understood what the costumes these dancers wear in Electronica were supposed to be. Now that I know, I don't really care either way. I do like photographing them though.
It seemed the years of aimless wandering and hard work had come to fruitition. This was to become a year of rest. Of bliss.
Summer at St. George's provides fun and enriching summer camps for children ages 4 to 15. www.summeratstgeorges.ca
Each summer, St. Georges opens its doors to the world and offers a dynamic, fun and safe boarding program. Boys and Girls aged 9 to 16 years come from all over the world to enjoy a total Canadian immersion experience in one of Canada's most beautiful cities and campuses.
Jean Kellogg, Merola Executive Director, Joan Kelly, James Kelly
Spring Benefit Gala 2015
A Waltz Down the Blue Danube
Photography by Kristen Loken
Purple wedding program on purple mums
Ceremony
Colonial Avenue Baptist Church
Roanoke, Virginia
Reception
Holiday Inn Valley View
Roanoke Virginia
Wedding Coordination
Diamond Events
Stephanie Hughes
540-558-8143
DJ
RSP Entertainment
Photographer
Bert Reed Photography
Florist
Petal Pushers
Cake Baker
Kelly Cakes
Susan Kelly
(540) 977-5349
This is what I'm doing at work for the last 2 weeks, coding and coding.
Esto es lo que estoy haciendo en el curro estas últimas 2 semanas, picar y picar codigo
Second version of the PF powered train, controlled by an Mindstorms EV3.
In the previous version, it was not possible to access the charging plug at all. Making it impossible to recharge the battery.
In this version, this problem has been solved. The access to the charging plug is now under the easy-to-remove roof of the train.
In this photo you see the power cable connected.
Student volunteers from Thomas Nelson Community College biology classes spend their Saturday morning participating in International Coastal Cleanup day at Dandy Haven Marine in Hampton, VA on Oct 19, 2019.
Virginia Institute of Marine Science's Marine Advisory Program and Virginia Sea Grant are proud partners in the Virginia Clean Marina Program, which recognizes marinas that voluntarily take measures to prevent or reduce pollution at their facilities.
(Photo by Aileen Devlin | Virginia Sea Grant)
An inaugural meeting between mentors from four federal government departments in BC and 11 skilled new Canadians marked the start of a ground-breaking mentoring program led by the Immigrant Employment Council of BC (IEC-BC).
Canadian Heritage, along with Passport Canada, Citizenship and Immigration Canada, and Western Economic Diversification Canada are all participating in the first program phase.
Over the next four months, immigrant professionals will work with their Canadian peers to learn about local business practices, increase their understanding of the BC workplace culture, access professional networks, and boost their cross-cultural communication and career-search skills.
Venue provided by Department of Canadian Heritage. Orientations facilitated and supported by Chris Mara and Astarte Sands from Mosaic BC, Laurie Sing from ISSofBC, and representatives from S.U.C.C.E.S.S.
Full Story: tapintotalent.ca/about-us/news-and-events/federal-governm...
Immigrant Employment Council of BC
Tap Into Talent
Twitter: @IEC_BC www.twitter.com/iec_bc