tag:blogger.com,1999:blog-891276053127500572.post6590380195482107261..comments2023-10-10T09:18:04.367-07:00Comments on Cognitive Dissonances: Why do metals seem colder although they have the same temperature?Cognitive Dissonanceshttp://www.blogger.com/profile/15069035350995446947noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-891276053127500572.post-79365831317694331792017-12-04T02:26:02.994-08:002017-12-04T02:26:02.994-08:00Good! A thermometer measures the temperature of th...Good! A thermometer measures the temperature of the object, that is, the average kinetic energy of its atoms/molecules. But our hands are not thermometers. What we measure with our hand when we feel cold or warm is not the temperature but how fast heat is transferred between our hand and the object, because our hand is hotter than the object. The point is that metals are good heat conductors because they have electrons that can move almost freely through the whole piece of metal. Therefore, although the temperature of the metals that are inside our room is the same as the temperature of the other objects, they take heat from us at a higher rate and that is why they seem colder.<br />This is a very useful cognitive conflict in order to teach students the structure of metallic crystal lattices in freshman (9th <a href="//en.wikipedia.org/wiki/Education_in_the_United_States#Educational_stages" rel="nofollow">grade</a>).<br />Sergio Montañezhttps://www.blogger.com/profile/08247791768896074379noreply@blogger.comtag:blogger.com,1999:blog-891276053127500572.post-27283470648320603242017-12-03T01:34:23.574-08:002017-12-03T01:34:23.574-08:00Our corporal temperature is higher than the temper...Our corporal temperature is higher than the temperature of the room. Metals are excellent conductors of heat, so the "Take" our temperature, leaving us a cold feelingJuan ^•^https://www.blogger.com/profile/11668843975857735715noreply@blogger.com