{ renderer.domElement.style.borderRadius = '8px'; renderer.domElement.style.position = 'absolute'; renderer.domElement.style.zIndex = '100'; renderer.domElement.style.top = '0px'; renderer.domElement.style.left = '0px'; renderer.domElement.style.width = '100%'; renderer.domElement.style.height = '100%'; const illustration = await illustration_svg.text(); const svg_data = (new DOMParser).parseFromString(illustration, "image/svg+xml"); const svg_illustration = d3.select(svg_data.documentElement); const svgElement = svg_illustration.node(); svgElement.setAttribute("width", "100%"); svgElement.setAttribute("height", "auto"); svgElement.setAttribute("viewBox", "0 20 750 750"); return html`

${renderer.domElement}

Frankford Arsenal
Prism No. 7

${svg_illustration.node()}

MATERIAL: Borosilicate Glass (N-BK7)
REFRACTIVE INDEX: n_d = 1.5168
REFERENCE:
Defense Supply Agency, “Optical Design: Military Standardization Handbook,” MIL-HDBK-141, USA (1962).
DESCRIPTION:
This prism is made in one piece. The line of sight is deviated through an angle of 90° in the horizontal plane and, simultaneously, through an angle of 45° in the vertical plane. The observer, standing at right angle to the line of sight, will see a normal image of the target since the prism neither inverts nor reverts the image.

`; }