{"product_id":"compound-bar-used-to-demonstrate-thermal-expansion-in-a-physics-classroom-pack-of-10","title":"Compound Bar - Used to Demonstrate Thermal Expansion in a Physics Classroom, Pack of 10","description":"A compound bar is a visual demonstration of thermal expansion. It consists of a bimetal strip mounted in an insulating handle. Because of the unequal expansion of the two different metals, the bar will bend when heated, which illustrates the operation of a thermostat. Instructions included. \u003cbr\u003e\u003cbr\u003eSold in a pack of 10.","brand":"GSC International","offers":[{"title":"Default Title","offer_id":49956254089493,"sku":"GSC4-30901-10","price":83.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/4897\/3845\/files\/4-30901-10-photoroom.jpg?v=1780892585","url":"https:\/\/unitedsupplycorp.com\/products\/compound-bar-used-to-demonstrate-thermal-expansion-in-a-physics-classroom-pack-of-10","provider":"United Supply Corp.","version":"1.0","type":"link"}