Overcome space and time. Alike based internet. And the effects of city lights on nature. But lets start at the beginning with how we see light. When light enters our eye it hits the retina. And is received by photo receptor cells the socalled rod cells respond to light and dark the cones are responsible for color vision but we only see the light that actually enters our eyes if you are in zambia wanted to know more. How those light travel. During a thunderstorm or you see the light. Things straight away but we hear the thunder with a delay. Thats because sound waves move slowly or as light travels super fast at 300000 kilometers per 2nd. It maintains that speed in space where theres a vacuum and it moves only slightly slower through the earths atmosphere but other media slow it down for example water in which it travels at a mere 225000 kilometers a 2nd. Life travels like ripples spreading on the surface of a liquid in all directions simultaneously. And in Straight Lines which is why w
Was running for president. Afterwards, she took questions from the audience. [cheers and applause] hey, good afternoon. Im chair of the Johnson County democrats. Im not here to make an endorsement im here to welcome you and i know the reason youre here. And that reason is you want to make the change in the way our state and our government in washington is being run. [applause] absolutely. And really whats the best way th do that . Get involved. You can get involved with the Johnson County democrats and what to do is go to jcdems. Org. Thats jcdems. Org, get out your phones right now and had their, and sign up for our weekly email. On the email there is a newsletter that will give you the latest of the important political events going on in our area as well as you can have details about the caucasus, where youre going to caucus, information about training on what, and also in person online. So please go to that site, join the Johnson County democrats and help us take back the state, the
Johnson county democrats. What you do is go to jcdems. Org, get out your phones right now and head there, sign up for our weekly email. On that email there is a newsletter that will give you the latest of the important political events going on in our area, as well as details about the caucuses, where you will caucus, information about training online, and also in person, so please go to that site, join the Johnson County democrats, and help us take back the state, the country, and support our local democrats. Thank you. [applause] next, please join me in welcoming state senator joe bolkcom to the stage. Snoo sen. Bolkcom good afternoon, iowa city. Happy holidays. I am state senator joe bolkcom. Thank you for coming to next, please join me in welcoming state senator joe bolkcom to the stage. [applause] sen. Bolkcom good afternoon, iowa city. Happy holidays. I am state senator joe bolkcom. Thank you for coming to see Elizabeth Warren this afternoon. If youre already a committed warren s
Democrats. Im not here to make an an endorsement but im here to welcome you. I bet i know the reason youre here. And that reason is, you want to make ail change in the way our state and our government in washington is being run. So, absolutely. Whats the best way to do that . S get involved. You can get involved with the Johnson County democrats, and what you do is go to jcdems. Org, thats jcdems. Org, get out your phones right now, head there and sign up for our weekly email. And on that email theres a newsletter. Its going to give you the latest of the important political events going on in ou area as well as you can have details about the caucuses, where youre going to caucus, e information, about training stt online and also in person. So, please go to that site. Suppr join the Johnson County democrats and help us take back the state, the country and support our local democrats. Thank you. Next, please join me in welcoming state senator joe bolkum to the stage. [ applause ] goods a
Thank you all for being here tonight. We are very happy to be joined by senator warren tonight. We are looking to deliver the unions for all messages for all candidates. Longor warren has been a advocate for working people and unions. Senator warren and her teams have been eager to engage, tweeting statements of support for our rocking ham county workers as well as voters to unionize back in october, recording a video for our conversation and submitting responses to our president ial candidate questionnaire. Last week her oped published talked about our own rocking him unionized efforts. Now she is here in person. I will turn it over to her for some opening remarks and thoughts. Then we will open it up to you for questions to ask senator warren. For that, i would like to introduce senator warren. [applause] thank you very much. Hello, hello sciu. It is good to see everyone. I am so glad to be here. Im going to talk a little bit at the top and take as many questions as we can possibly d