Room Alone 401-410 - Netflix
This series shows stories of lonely people in the age of social media. Everyone stays by themselves on the same floor, from room 401 to 410. Although their lifestyles may be different, the owner of each room has to confront with the same problem, and that is loneliness. Social media seems to be the only choice for them to have someone for talking, liking, and following. However, in reality, that loneliness cannot be deleted.
Runtime: 60 minutes
Room Alone 401-410 - Blowback (firearms) - Netflix
Blowback is a system of operation for self-loading firearms that obtains energy from the motion of the cartridge case as it is pushed to the rear by expanding gas created by the ignition of the propellant charge. Several blowback systems exist within this broad principle of operation, each distinguished by the methods used to control bolt movement. In most actions that use blowback operation, the breech is not locked mechanically at the time of firing: the inertia of the bolt and recoil spring(s), relative to the weight of the bullet, delay opening of the breech until the bullet has left the barrel. A few locked breech designs use a form of blowback (example: primer actuation) to perform the unlocking function. The blowback principle may be considered a simplified form of gas operation, since the cartridge case behaves like a piston driven by the powder gases. Other operating principles for self-loading firearms include blow forward, gas operation, and recoil operation.
Room Alone 401-410 - Lever-delayed - Netflix
Lever-delayed blowback utilizes leverage to delay the opening of the breech. When the cartridge pushes against the bolt face, the lever moves the bolt carrier rearward at an accelerated rate relative to the light bolt. Leverage can be applied with a dedicated part or through inclined surfaces interacting with each other. This leverage significantly increases resistance and slows the movement of the lightweight bolt. John Pedersen patented the first known design for a lever-delay system. The mechanism was adapted by Hungarian arms designer Pál Király in the 1930s and used in the Danuvia 43M. Other weapons to use this system are the Hogue Avenger and Benelli B76 pistols, the Cristóbal Carbine, the TKB-517 and FAMAS assault rifles, the AVB-7.62 battle rifle, the FNAB-43 submachine gun, and the Sterling 7.62 and AA-52 machine guns.
Room Alone 401-410 - References - Netflix