അതിനാൽ, ഒരു ബ്ലോക്ക് ബോഡി , ഞാൻ വീണ്ടും ഒരു ദ്വാരമുള്ള ഒരു അറ ഉണ്ടാക്കും, ശരി, പുറത്തുവരുന്ന വികിരണം അതിന്റെ താപനിലയെ മാത്രം ആശ്രയിച്ചിരിക്കുന്നു, ശരി, മറ്റൊന്നും അതിന്റെ താപനില Tയെ മാത്രം ആശ്രയിച്ചിരിക്കുന്നു, അതിനാൽ, നിങ്ങളെ ആശ്രയിക്കുന്ന അറയ്ക്കുള്ളിലെ റേഡിയേഷൻ മർദ്ദം Tയുടെ മാത്രം ഒരു ചടങ്ങാണ്; ഗ്യാസ് അല്ലെങ്കിൽ ഐഡിയൽ ഗ്യാസിൽ നിന്ന് വ്യത്യസ്തമായി, ഗ്യാസിന്റെ അവസ്ഥ, മർദ്ദത്തിന്റെ അളവ്, മർദ്ദം താപനില എന്നിവ വ്യക്തമാക്കുന്നതിന് നിങ്ങൾക്ക് 2 പാരാമീറ്ററുകൾ ആവശ്യമാണെന്ന് നിങ്ങൾ കാണുന്നു, ചിലത് വെറും 2 പാരാമീറ്ററുകൾ; റേഡിയേഷനിൽ, ഇത് ഒരു പരാമീറ്റർ മാത്രമാണ്.
కాబట్టి, ఒక బ్లాక్ బాడీ కోసం నేను మళ్ళీ ఒక రంధ్రంతో ఒక కుహరాన్ని తయారుచేస్తాను, బయటకు వచ్చే రేడియేషన్ దాని ఉష్ణోగ్రతపై మాత్రమే ఆధారపడి ఉంటుంది, దాని ఉష్ణోగ్రత T పై మాత్రమే ఆధారపడి ఉంటుంది తప్ప ఇంకేమి లేదు మరియు అందువల్ల, u పై ఆధారపడిన కుహరం లోపలి రేడియేషన్ ప్రెషర్ కూడా కేవలం T యొక్క ఒక ఫంక్షన్; మీరు చూసే వాయువు లేదా ఆదర్శ వాయువు లో వాయువు యొక్క స్థితి లేదా పీడన ఘణపరిమాణం, పీడన ఉష్ణోగ్రత లను విశదీకరించడానికి మీకు 2 పరామితులు అవసరం, కేవలం 2 పరామితులు దీనిలా కాకుండా; రేడియేషన్లో, అది ఒక పరామితి మాత్రమే అవసరం.