শেকল

শেকল হয় নানান রকম, কিছু দেখা যায় আর কিছু দেখা যায় না । কিছু সময় কেউ কাউকে শেকলে বাঁধে আবার হয়ত নিজেই নিজেকে শেকলে বাঁধে । দৃশ্যমান শেকলের চেয়ে অদৃশ্য শেকলে মানুষ আটকায় বেশি। যা দেখা যায় না আর শেকল ভাঙাও যায় না । শেকলবন্ধী !

Neutron star

Neutron star, any of a class of extremely dense, compact stars thought to be composed primarily of neutrons. Neutron stars are typically about 20 km (12 miles) in diameter. Their masses range between 1.18 and 1.97 times that of the Sun, but most are 1.35 times that of the Sun. Thus, their mean densities are extremely high—about 1014 times that of water. This approximates the density inside the atomic nucleus, and in some ways a neutron star can be conceived of as a gigantic nucleus. It is not known definitively what is at the centre of the star, where the pressure is greatest; theories include hyperons, kaons, and pions. The intermediate layers are mostly neutrons and are probably in a “superfluid” state. The outer 1 km (0.6 mile) is solid, in spite of the high temperatures, which can be as high as 1,000,000 K. The surface of this solid layer, where the pressure is lowest, is composed of an extremely dense form of iron.

Mercy

Do they not see the birds above them with wings outspread and [sometimes] folded in?

সমুদ্র আর তার নীল আকাশ

Selecting hosted blogging software

When you choose to blog using a hosted blog service, you don’t need to worry about the software technology at all. You can concentrate on the topic for your next blog post, rather than on how to configure a web server. To use hosted blogging software, you log into the editing tool, write a post, click the Publish button, and log out.