WELCOME TO SCIENCE OF SAND 2.0
|CHARLES F. LINDGREN AT PARADISE COVE, MALIBU, CALIFORNIA - Frances C. Lindgren Photograph|
Welcome to my site! It has been a long time coming to make this revision. Unfortunately there is no way for me to convert my old site to this new one, so there will be links sending you back to my original site. WARNING! When you go back to the original site, the only way to get back to this one will by using the back arrow on your browser. Sorry about that. Sand has always been a guiding force in my life. I've always been around it, and always been fascinated by it. As I attended various NSTA conventions, one of the most popular sessions was the one involving sand samples. People do all kinds of things with sand! At the NSTA National Convention in St. Louis, I was introduced to a great lab created by a teacher in Virginia. He had students analyze sand from Maine to Florida, and attempt to create a hypothesis on why the sand changed as you went from north to south. I was hooked! I sent out a request on several lists requesting sand from the Atlantic Coast. Sand came in from all over the country! The lab was a huge success. The lab is now gone. At least my ability to teach it is gone because I'm retired, but the idea still lives. I want to make this a virtual lab accessible to all.
If you send me a small sample of sand, no bigger than a tea bag. I will take three photographs of the sand and post them. One of the images (0X) will be a general image of the sand as you would see it on a beach. The second and third images will be macro photographs. The macro images will all be of the same magnification, so they can be used for comparisons. I have also added to charts to help students classify the samples. The first is to identify how sorted the sample is. The best image to use for sorting is the 0X. It shows almost the entire sample. The 1X and 3X have a definite bias to them based on what I found interesting or artistic! The second chart is for grain shape showing roundness, and spheristity.
I want this site to be an educational tool. Everything about the site will be consistent. All of the images will be taken with the same degree of magnification. Therefore you could do a study on sample sizes. By clicking on the thumbnail image that appears on the country or the low resolution image on the location page, you can get access to a larger version. Feel free to use these.
Betsy Wemyss Photograph