A blackbody, which is an âidealâ or âperfectâ emitter (that means its emission properties do not vary based on location or the composition of the object), emits a spectrum of light with the following properties: The hotter the blackbody, the more light it gives off at all wavelengths. That is, if you were to compare two blackbodies, regardless of what wavelength of light you observe, the hotter blackbody will give off more light than the cooler one.
Right-click on the disc and select Eject, or select the disc and then click on the blue Eject button on the top toolbar of the application window. 3. Restart your Mac while holding down the mouse or trackpad button. Make sure you hold it down until your computer has fully restarted.
There is an Eject button on the Media Control panel. See Page 10 of the manual Here. If there is no disk activity and the button still doesn't work, contact Support. got a similar problem, but in my case, the cd won't eject even when I'm in BIOS/DOS/F8 menu. The only way to eject the cd is to use the EJECT function from My computer. The system is only 1 day old, and I encountered this problem only after few discs replacements. very frustrating.