Measurement of X-ray scattering by optical surfaces

Optical surfaces built for X-ray telescopes are made to reflect very short wavelengths that range in magnitude from 2 to 100 angstroms. Minor irregularities or contamination on sufrace of any telescope mirror can affect quality of optical image. Apparatus checks reflection of optical surfaces; scattering of X-rays is measured with angular accuracy of one arc-second

A Liberal Education

Address by President Henry Merritt Wriston (1925-1937) to the graduating class of 1927. Published in the Lawrence College Bulletin, volume XXVII, number 10

Tensions

Boswell quotes the great Samuel Johnson as saying, A man, sir, should keep his friendship in a constant repair. That is the theme of what I have to say of international relations this morning. It has become particularly important: for the United States because the world is convinced that the choice be­tween peace and war will be fundamentally an: American decision

Excerpt from the Novel Shark Girls

pages 56-7

The Importance of a Strong Mathematical Foundation

The mathematical skills students learn from kindergarten through eighth grade are the foundational skills upon which all higher level mathematics courses build. It is highly beneficial that students master previous mathematics concepts, applications, and skills, prior to learning algebra and other higher level mathematical courses. Mastering elementary and middle level mathematics before learning algebra increases students’ chances for success when taking an algebra course. This study tested 39 ninth and tenth graders, from the college preparatory program Upward Bound, on the mathematical domains of fractions and ratios/proportions. Participants took one of two tests, each composed of three questions increasing in difficulty. Calculators were not permitted. The fractions test was composed of a third, fourth, and fifth grade question and only 5 of 20 participants were able to pass the assessment. The ratios/proportions assessment was composed of a sixth grade question and two seventh grade questions and only 2 participants out of 19 were able to pass the assessment. To better aid in the creation of strong mathematical foundations educators should strive to assess student understanding prior to instruction and teach students based off their current understanding and not their current grade level. Educators should also be sure to not only teach procedural knowledge but also conceptual understanding

What Is An Education?

Address by President Henry Merritt Wriston (1925-1937) to the graduating class of 1926. Published in the Lawrence College Bulletin, volume XXVI, number 10

The Validity of Limited Objectives

I am going to take as my topic, The Validity of Limited Objectives. The century between Waterloo and Serajevo saw the most promising evidences of progress toward a peaceful world of any period in modern history

Basic Factors Influencing Our Strategy

Basic strategy must be determined by a perpetual remem­brance that the world is round. Like most other important observa­tions this may be considered obvious, but its realization in the ab­stract and its application in the concrete are two different things

Exhibition September 27 – November 27, 2013

Leech Gallery: Capturing Modernity: Art, Fashion and Artifice. Curated by Elizabeth Carlson, associate professor of art history. Hoffmaster Gallery: Alison Stehlik: Where-House Kohler Gallery: Stephanie J. Williams: Homegrownhttps://lux.lawrence.edu/wag_exhibitions/1001/thumbnail.jp

Political Factors in National Strategy

Do political relations between different peoples and governments cease when the exchange of diplomatic notes is interrupted? If political activity were sus­pended, military victory would be utterly futile. For the political alms are the end; the war is the means, and the means can never be conceived without the end