## 5 Innovation and Advantage  
The virtual simulation system, developed through Unreal Engine 5, not only measures high-precision physical data but also reflects real-world experimental errors. Regardless of  
Figure 6: Graph depicting the relationship between green light diffraction angles and incident angles. how the experimental instruments are operated, the observed phenomena and measured values closely align with the real world. The following will demonstrate the superiority of the system and the feasibility of the approach through a comparative analysis. 1. The experimental content is innovative. The studies in [8; 9; 10; 11; 12] do not innovate the experimental content of the spectrometer. However, the virtual simulation experiments in this system include self-designed experiments (as shown in Figure 7). The grating equal inclination instrument used in the experiment is also a homemade device (replacing the telescope of a discarded spectrometer with a laser, transforming the parallel light tube into a receiving screen, and keeping other parts unchanged). Independently exploring innovative experiments can better cultivate students' practical and innovative abilities. 2. Compatibility and cross-platform use are enhanced in this simulation system. Unlike the simulation programs in references [10; 12], which only provide.exe files, our simulation system includes both a local version and a web version. The information between the program and the webpage is synchronized in real time through a database. The web version can run the program directly without installing any software or plugins (as shown in Figure 8), avoiding compatibility issues across different computer systems. Figure 7: Innovative experimental setup. A strong sense of immersion. Comparing the virtual experiments using the virtual spectrometer in this article with those in references [8; 9; 10; 11; 12], the actual effect is shown in Figure 9. It can be visually perceived that the immersion of the spectrometer experiment based on Unreal Engine 5 (Figure 9f) is stronger. The model's texture and material gloss are of higher quality, and users in such a high-quality virtual laboratory can greatly avoid the operational dissonance caused by mouse and keyboard operations, providing users with a more user-friendly interactive experience and adaptability [27]. Figure 8: Web access interface. (**a**) Web Operation Innovation Experiment. (**b**) Basic Web Operation Experiment. Figure 9: Cont. Figure 9: Comparison of virtual simulation effects. (**a**) Spectrometer instrument based on Unity 3D [8]. (**b**) Virtual spectrometer instrument structure [9]. (**c**) Spectrometer adjustment interface [10]. (**d**) Diffraction experiment based on OpenGL [11]. (**e**) Spectrometer based on Unity 3D [12]. (**f**) Spectrometer experiment based on Unreal Engine 5. (4)Lower performance requirements. As this system is a 3D virtual simulation experiment, the real-time rendering of scene models and lighting effects consumes more system resources compared to 2D experiments. Therefore, the \".exe\" program of this system is not included in the performance comparison. It only demonstrates that web-based access using Unreal Engine 5's pixel streaming technology has lower requirements for computer performance. By delving into the well-known virtual simulation platforms such as phET and Chem Collective, the performance superiority of the system is compared based on CPU usage (AMD Ryzen 7 5800H with Radeon Graphics) and GPU usage (NVIDIA GeForce RTX 3070 Laptop GPU), as shown in Figure 10. The web-based CPU average usage of Unreal Engine 5 is only 0.4%, reducing the CPU usage by 90.24% to 96.23% compared to the other three platforms, with an average saving of 94.76%. Additionally, the GPU usage for network access in this system is 0%, saving GPU resources compared to non-network-access simulations. (5)Comprehensive scoring system. None of the platforms in references [8; 11; 12], or the three virtual simulation platforms in Figure 10, have a complete scoring system.