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# Blackbody Spectrum

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Use this HTML code to display a screenshot with the words "Click to Run". Blackbody Planck's Law Wien's Law PhET is supported by and educators like you.
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### Topics

• Blackbody
• Planck's Law
• Wien's Law
• Electromagnetic Radiation
• Quantum Mechanics
• Astronomy

### Description

How does the blackbody spectrum of the sun compare to visible light? Learn about the blackbody spectrum of Sirius A, the sun, a light bulb, and the earth. Adjust the temperature to see the wavelength and intensity of the spectrum change. View the color of the peak of the spectral curve.

### Sample Learning Goals

• Describe what happens to the blackbody spectrum as you increase or decrease the temperature. What happens to the shape of the curve and the peak of this curve?
• Describe the blackbody spectrum of a light bulb. Why do light bulbs get hot? Do they seem efficient?
• Imagine that you see 2 hot, glowing objects--one is glowing orange and the other is glowing blue. Which one is hotter?
• Find the relationship between the temperature and the wavelength at the peak of the curve.
Version 2.02

### Teacher Tips

 Overview of sim controls, model simplifications, and insights into student thinking ( PDF ).

### Teacher-Submitted Activities

Visualization and Visual Illusions SIM Homework Kathy Perkins, Carl Wieman UG-Intro HW Physics
Blackbody Radiation and Wien's Law Michael Pennisi HS Lab Physics
PhET Sims Aligned to the Chemistry Curriculum Julia Chamberlain UG-Intro
HS
Other Chemistry
How do PhET simulations fit in my middle school program? Sarah Borenstein MS Other Earth Science
Physics
Chemistry
Biology
Blackbody Spectrum & Lasers Simulations Homework Kathy Perkins, Carl Wieman UG-Intro
HS
HW Physics
Blackbody Spectrum Simulation Homework Kathy Perkins, Carl Wieman UG-Intro
UG-Adv
HW Physics
MS and HS TEK to Sim Alignment Elyse Zimmer HS
MS
Other Physics
Chemistry
Biology
Mapping of PhET and IBDP Physics Jaya Ramchandani HS Other Physics
Temperature and Radiation Activity Dorian McIntire UG-Intro
HS
HW
Lab
Physics
Other
Astronomy
Temperature and Luminosity of Stars: Wein's Law and the Stephan Boltzmann Law Rhoda Berenson UG-Intro Lab Astronomy
Blackbody Radiation updated from Michael P. michael marty HS Lab
Demo
Black Body Radiation: Seeking Patterns in Data Sets Roberto Marrero HS Lab Chemistry
Solar Astronomy Mark Kelly HS Lab
HW
Astronomy
Blackbody Spectrum Curt Miller HS Lab Physics
흑체 스펙트럼 SIM 사용지침서 이화국(Wha Kuk Lee) MS
HS
Demo
Lab
Chemistry
Earth Science
Physics
Astronomy
Visão de Cor Maria Elizete Pereira Alencar Oliveira MS Guided Biology
Ley de Wien y de Stephan-Boltzmann José Saldaña UG-Intro
HS
Lab Physics
Astronomy
Language Download or Run Tips
Afrikaans All Afrikaans Swartliggaamstraling Spektrum
Arabic All العربية طيف الجسم المظلم
Basque All Euskara Gorputz beltzaren espektroa
Belarusian All беларускі Спектр абсалютна чорнага цела
Bosnian All Bosanski ZRAČENJE CRNOG TIJELA
Catalan All català Espectre del Cos Negre
Chinese (Simplified) All 中文 (中国) 黑体辐射
Chinese (Traditional) All 中文 (台灣) 黑體幅射光譜
Croatian All hrvatski Zračenje crnog tijela
Czech All čeština Spektrum černého tělesa
Danish All Dansk Farvesammensætning
Dutch All Nederlands zwarte straler
Estonian All Eesti Mustkiirguri spekter
Finnish All suomi Mustan kappaleen säteilyn spektri
French All français Spectre du corps noir
Galician All Gallegan Espectro do Corpo Negro
German All Deutsch Spektrum eines Schwarzen Strahlers
Greek All Ελληνικά Φάσμα μελανού σώματος
Hebrew All עברית ספטרום של גוף שחור
Hungarian All magyar Hőmérsékleti sugárzás spektruma
Indonesian All Bahasa Indonesia Spektrum Benda hitam
Italian All italiano Spettro del corpo nero
Japanese All 日本語 黒体のスペクトル(Blackbody Spectrum)
Kannada All Kannada blackbody-spectrum
Kazakh All Kazakh Қара дене спектрі
Khmer All Khmer ស្ប៉ិច Blackbody
Korean All 한국어 흑체 스펙트럼
Macedonian All македонски Зрачење на црно тело
Marathi All मराठी कृष्णिका वर्णपंक्ती
Mongolian All Монгол (Монгол) Хар биеийн Спектор
Persian All فارسی طیف جسم سیاه
Polish All polski Spektrum ciała doskonale czarnego
Portuguese All português Radiação do Corpo Negro
Portuguese (Brazil) All português (Brasil) blackbody-spectrum
Serbian All Српски Зрачење црног тела
Slovak All Slovenčina Žiarenie čierneho telesa
Slovenian All Slovenščina Spekter črnega telesa
Spanish All español Espectro del Cuerpo Negro
Spanish (Mexico) All español (México) Espectro del Cuerpo Negro
Spanish (Peru) All español (Perú) Espectro del Cuerpo Negro
Swedish All svenska Svartkroppsspektrum
Thai All ไทย การแผ่รังสีของวัตถุดำ
Turkish All Türkçe siyah cisim ışıması
Turkmen All Turkmen Gara jisimiň spektry
Vietnamese All Tiếng Việt Quang phổ của vật đen
Windows Macintosh Linux
Microsoft Windows
XP/Vista/7/8.1/10
Macromedia Flash 9 or later
OS X 10.9.5 or later
Macromedia Flash 9 or later
Macromedia Flash 9 or later
Design Team Third-party Libraries Thanks To
• Michael Dubson (developer/lead)
• Kathy Perkins
• Interviewer: Wendy Adams