Consider the following diagram of a molecular beam
apparatus:
In the design of the apparatus, it is important to ensure that the
molecular beam effusing from the oven does not collide with other
particles until the beam is well past the skimmer, a device that
selects molecules that are traveling in the appropriate direction,
resulting in the creation of a molecular beam. The skimmer is
located 10 cm in front of the oven so that a mean free path of 23
cm will ensure that the molecules are well past the skimmer before
a collision can occur.
If the molecular beam consists of O2 at a temperature of 590 K, what must the pressure outside the oven be to ensure this mean free path? P = ?
Consider the following diagram of a molecular beam apparatus: In the design of the apparatus, it...
summatize the following info and break them into differeng key points. write them in yojr own words apartus 6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...
summarizr the followung info and write them in your own words and break them into different key points. 6.5 Metering Chamber: 6.5.1 The minimum size of the metering box is governed by the metering area required to obtain a representative test area for the specimen (see 7.2) and for maintenance of reasonable test accuracy. For example, for specimens incorporating air spaces or stud spaces, the metering area shall span an integral number of spaces (see 5.5). The depth of...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...