XLIII.—A modified bunsen burner

Infrared radiation from a Bunsen flame.

Many observers have studied th e infrared emi sion of a Bunsen flame [11. 2 The strongest band ocem s at about 4.4 Il and is produced by carbon dioxid e. Other bands have been found a t 0.95, 1.45, 2.0, and 2.8 Il , and are a ttributed to carbon dioxide and water vapor. Very little radiation has been observed in the region beyond 7 Il . In the visible and ultraviolet regions of the spectrum, co...

Berichte Der Bunsen-gesellschaft Fur Physikalische Chemie

Fixpoint Computation: Leaking Gas Burner

Real-time distributed system speciication and veriication in asynchronous propositional temporal logic. Let A be the integrator system deened in Figure 5. We use the xpoint computation procedure to prove that the formula y 60 ! 20t y is an invariant of A. It follows that the gas burner leaks at most one twentieth of the time in any interval of at least 60 seconds. Let R i = hpc = 1 ^ t = 0 ^ x ...

Get off the back burner!

A 65-year-old male presented with chronic mechanical back pain and a 6-month history of a discrete, hyperpig-mented reticular rash on his lower back. On further questioning, the patient admitted to daily use of an electric heating pad over the distribution of the rash (Figure 1). The diagnosis was erythema ab igne (EAI). Historically, EAI has been associated with repeated and prolonged exposure...

Experimental and numerical investigations in the near-burner region of a versatile multi-fuel burner

An experimental and numerical investigation on the effect of swirl on the motion of coal particles in the near-burner region of a versatile multi-fuel swirl-stabilised laboratory burner of total thermal input of 100kW, has been performed. The burner was designed as a scale model of a lOMW coal burner operating in a cement rotary kiln, produces flames of different aerodynamic characteristics, an...