Acquisition of a Multiple Resonance Frequency Spectrum Analyzer

植物茎和组织样品的刚度和模量可以从振动的固有频率（=基频和高次谐波）来测量。通过测量茎被切割和缩短时这些频率的变化，并将这些变化与不同几何形状的预期变化进行比较，可以确定茎的形态符合许多竞争几何模型之一的程度。设计了一种仪器，可以同时测量组织样本的植物茎的所有固有频率。要求提供资金以购买有助于数据收集分析的额外仪器。该设备将允许收集与植物结构、发育、生态以及诸如刚度和抗压性等实际方面有关的生物力学数据。

The stiffness and moduli of plant stems and tissue samples can be measured from natural frequencies of vibration (=fundamental frequency and higher harmonics). By measuring shifts in these frequencies as a stem is cut and shortened in length, and by comparing these shifts with those anticipated for different geometries, the extent to which a stem's morphology conforms to one of many competing geometric models can be determined. An apparatus has been designed that can measure simultaneously all of the natural frequencies of a plant stem of tissue sample. Funding is requested to purchase additional instrumentation that will facilitate data gathering analysis. The equipment will allow the collection of biomechanical data having bearing on plant structure, development, ecology, and such practical aspects as stiffness and resistance to compression.